DevOps tips & tricks

Thursday, October 20, 2022

Docker UBI RedHat image

HOWTO

Search for image

Pastdave@dave ~]$ docker search registry.access.redhat.com/ubi
NAME                      DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
ubi8/go-toolset           Platform for building and running Go 1.11.5 …   0                    
ubi9/go-toolset           rhcc_registry.access.redhat.com_ubi9/go-tool…   0                    
ubi7                      The Universal Base Image is designed and eng…   0                    
ubi9-beta/ubi             Provides the latest release of Red Hat Unive…   0                    
ubi8/openjdk-8-runtime    OpenJDK 1.8 runtime-only image on Red Hat Un…   0                    
ubi8/openjdk-11-runtime   OpenJDK 11 runtime-only image on Red Hat Uni…   0                    
ubi8/openjdk-17-runtime   OpenJDK 17 runtime-only image on Red Hat Uni…   0                    
ubi7/ubi-minimal          The Universal Base Image Init is designed to…   0                    
ubi7/ubi-init             The Universal Base Image Init is designed to…   0                    
ubi8-minimal              The Universal Base Image Minimal is a stripp…   0                    
ubi7-minimal              The Universal Base Image Minimal is a stripp…   0                    
ubi8/ubi-micro            Provides the latest release of Micro Univers…   0                    
ubi9-beta/ubi-minimal     Provides the latest release of the Minimal R…   0                    
ubi9/ubi-init             rhcc_registry.access.redhat.com_ubi9/ubi-init   0                    
ubi9-init                 rhcc_registry.access.redhat.com_ubi9-init       0                    
ubi9-micro                rhcc_registry.access.redhat.com_ubi9-micro      0                    
ubi7/ubi                  The Universal Base Image is designed and eng…   0                    
ubi8/ubi                  Provides the latest release of the Red Hat U…   0                    
ubi8                      The Universal Base Image is designed and eng…   0                    
ubi9/ubi                  rhcc_registry.access.redhat.com_ubi9/ubi        0                    
ubi9                      rhcc_registry.access.redhat.com_ubi9            0                    
ubi8/ubi-minimal          Provides the latest release of the Minimal R…   0                    
ubi8/ubi-init             Provides the latest release of the Red Hat U…   0                    
ubi8-init                 The Universal Base Image Init is designed to…   0                    
ubi7-init                 The Universal Base Image Init is designed to…   0                    
ubi8-micro                Provides the latest release of Micro Univers…   0                    
ubi9-beta/ubi-init        Provides the latest release of the Red Hat U…   0                    
ubi9-beta/ubi-micro       Provides the latest release of Micro Univers…   0                    
ubi9/ubi-minimal          rhcc_registry.access.redhat.com_ubi9/ubi-min…   0                    
ubi9/ubi-micro            rhcc_registry.access.redhat.com_ubi9/ubi-mic…   0                    
ubi9-minimal              rhcc_registry.access.redhat.com_ubi9-minimal    0                    
ubi7/php-72               Apache 2.4 with PHP 7.2                         0                    
ubi8/php-72               Platform for building and running PHP 7.2 ap…   0                    
ubi8/s2i-core             Base image which allows using of source-to-i…   0                    
ubi8/s2i-base             Base image with essential libraries and tool…   0                    
ubi8/python-27            Platform for building and running Python 2.7…   0                    
ubi8/python-36            Platform for building and running Python 3.6…   0                    
ubi7/nodejs-8             Platform for building and running Node.js 8 …   0                    
ubi7/ruby-25              Platform for building and running Ruby 2.5 a…   0                    
ubi7/python-27            Python 2.7 platform for building and running…   0                    
ubi8/dotnet-21            .NET Core 2.1 SDK and Runtime on RHEL 8         0                    
ubi7/go-toolset           Platform for building and running Go Applica…   0                    
ubi8/ruby-26              Platform for building and running Ruby 2.6 a…   0                    
ubi8/nodejs-12            Platform for building and running Node.js 12…   0                    
ubi8/php-73               Platform for building and running PHP 7.3 ap…   0                    
ubi7/nodejs-10            Platform for building and running Node.js 10…   0                    
ubi8/dotnet-30            .NET Core 3.0 SDK and Runtime on RHEL 8         0                    
ubi7/php-73               Platform for building and running PHP 7.3 ap…   0                    
ubi7/nodejs-12            Platform for building and running Node.js 12…   0                    
ubi8/openjdk-8            Source To Image (S2I) image for Red Hat Open…   0                    
ubi8/python-38            Platform for building and running Python 3.8…   0                    
ubi8/dotnet-31-runtime    .NET Core 3.1 runtime only on RHEL 8            0                    
ubi8/nginx-118            Platform for running nginx 1.18 or building …   0                    
ubi8/ruby-27              Platform for building and running Ruby 2.7 a…   0                    
ubi8/dotnet-50            .NET 5.0 SDK and Runtime on RHEL 8              0                    
ubi7/nginx-118            Platform for running nginx 1.18 or building …   0                    
ubi8/pause                Podman pod infrastructure container             0                    
ubi8/skopeo               Containerized version of Skopeo                 0                    
ubi8/python-39            Platform for building and running Python 3.9…   0                    
ubi8/httpd-24             Platform for running Apache httpd 2.4 or bui…   0                    
ubi7/ruby-30              Ruby 3.0                                        0                    
ubi8/podman               Containerized version of Podman                 0                    
ubi7/nginx-120            Platform for running nginx 1.20 or building …   0                    
ubi8/openjdk-17           Source To Image (S2I) image for Red Hat Open…   0                    
ubi8/php-80               rhcc_registry.access.redhat.com_ubi8/php-80     0                    
ubi8/perl-532             rhcc_registry.access.redhat.com_ubi8/perl-532   0                    
ubi8/dotnet-21-runtime    Provides the latest release of Red Hat Enter…   0                    
ubi8/perl-526             Platform for building and running Perl 5.26 …   0                    
ubi8/nodejs-10            Platform for building and running Node.js 10…   0                    
ubi8/ruby-25              Platform for building and running Ruby 2.5 a…   0                    
ubi7/python-36            Platform for building and running Python 3.6…   0                    
ubi7/s2i-core             Base image which allows using of source-to-i…   0                    
ubi7/s2i-base             Base image with essential libraries and tool…   0                    
ubi8/dotnet-30-runtime    .NET Core 3.0 runtime only on RHEL 8            0                    
ubi7/ruby-26              Platform for building and running Ruby 2.5 a…   0                    
ubi8/openjdk-11           Source To Image (S2I) image for Red Hat Open…   0                    
ubi8/dotnet-31            .NET Core 3.1 SDK and Runtime on RHEL 8         0                    
ubi7/ruby-27              Platform for building and running Ruby 2.7 a…   0                    
ubi7/python-38            Python 3.8 platform for building and running…   0                    
ubi8/nodejs-14            Platform for building and running Node.js 14…   0                    
ubi8/perl-530             Platform for building and running Perl 5.26 …   0                    
ubi8/php-74               Platform for building and running PHP 7.4 ap…   0                    
ubi8/dotnet-50-runtime    .NET 5.0 runtime only on RHEL 8                 0                    
ubi7/nodejs-14            Platform for building and running Node.js 14…   0                    
ubi8/buildah              Containerized version of Buildah                0                    
ubi8/nodejs-14-minimal    Minimal image for running Node.js 14 applica…   0                    
ubi8/toolbox              Toolbox containerized shell image based in U…   0                    
ubi8/ruby-30              Platform for building and running Ruby 3.0 a…   0                    
ubi8/nginx-120            Platform for running nginx 1.20 or building …   0                    
ubi8/nodejs-16            Platform for building and running Node.js 16…   0                    
ubi8/nodejs-16-minimal    Minimal image for running Node.js 16 applica…   0                    
ubi8/dotnet-60-runtime    .NET 6.0 runtime only on RHEL 8                 0                    
ubi8/dotnet-60            .NET 6.0 SDK and Runtime on RHEL 8              0                    
ubi8/openssl              rhcc_registry.access.redhat.com_ubi8/openssl    0                    
ubi9-beta/toolbox         Toolbox containerized shell image based in U…   0                    
rhel8/toolbox             Toolbox containerized shell image based in U…   0                    
rhel9-beta/toolbox        Toolbox containerized shell image based in U…   0                    
ubi9/toolbox              rhcc_registry.access.redhat.com_ubi9/toolbox    0                    
ubi9/openjdk-11-runtime   rhcc_registry.access.redhat.com_ubi9/openjdk…   0                    
ubi9/openjdk-17-runtime   rhcc_registry.access.redhat.com_ubi9/openjdk…   0                    
e your text here.

Create container

dave@dave ~]$ docker run -it --name  ubi-test registry.access.redhat.com/ubi8/ubi bash
Unable to find image 'registry.access.redhat.com/ubi8/ubi:latest' locally
latest: Pulling from ubi8/ubi
7985264c26f7: Pull complete 
0689084f485b: Pull complete 
Digest: sha256:38e7c463209e3c5b7f1fcb79bb250e4653a66f3be9f23f5d175eeeadf8c3da79
Status: Downloaded newer image for registry.access.redhat.com/ubi8/ubi:latest
[root@634052a6ad62 /]# more /etc/redhat-release 
Red Hat Enterprise Linux release 8.6 (Ootpa)
[root@634052a6ad62 /]# ls /
bin  boot  dev    etc  home  lib    lib64  lost+found  media  mnt  opt  proc  root    run  sbin  srv    sys  tmp  usr  var

Sample custom image


[dave@dave simple]$ more Dockerfile 
FROM registry.access.redhat.com/ubi8/ubi

RUN dnf install -y python3

CMD mkdir /myapp

WORKDIR /myapp

COPY ./myapp.sh .

CMD ./myapp.sh

Build image

$ docker build -t redhat-ubi-myapp .
Sending build context to Docker daemon  4.096kB
Step 1/6 : FROM registry.access.redhat.com/ubi8/ubi
 ---> 16fb1f57c5af
Step 2/6 : RUN dnf install -y python3
 ---> Using cache
 ---> 22a66860e864
Step 3/6 : CMD mkdir /myapp
 ---> Using cache
 ---> 1c724139c1c9
Step 4/6 : WORKDIR /myapp
 ---> Using cache
 ---> 3ca288265be2
Step 5/6 : COPY ./myapp.sh .
 ---> 22db0568addf
Step 6/6 : CMD ./myapp.sh
 ---> Running in 5328a64d06ad
Removing intermediate container 5328a64d06ad
 ---> af70183187f5
Successfully built af70183187f5
Successfully tagged redhat-ubi-myapp:latest

Run image

[dave@dave simple]$ docker run redhat-ubi-myapp
Hello,world!
Red Hat Enterprise Linux release 8.7 (Ootpa)

Saturday, October 15, 2022

Remove deprecated Oracle JDBC classes oracle.sql.ArrayDescriptor, oracle.sql.STRUCT, oracle.sql.StructDescriptor

HOWTO

https://docs.oracle.com/en/database/oracle/oracle-database/19/jajdb/oracle/sql/STRUCT.html

https://stackoverflow.com/questions/33347134/how-to-fix-deprecated-oracle-sql-arraydescriptor-oracle-sql-struct-and-oracle-s

https://stackoverflow.com/questions/15483356/connection-cannot-be-cast-to-oracle-jdbc-oracleconnection/15483625#15483625

Code

https://github.com/dveselka/weblogic/tree/master/get-oracle-connection

package dave.service;

import java.sql.Array;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Struct;

import javax.annotation.sql.DataSourceDefinition;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import dave.entity.Account;
import oracle.jdbc.OracleConnection;
import oracle.sql.ArrayDescriptor;
import oracle.sql.SQLName;
import oracle.sql.STRUCT;
import oracle.sql.StructDescriptor;

@Stateless
//Data Source defined for JPA. It assume the derby database is started up and listen to localhost:1527
@DataSourceDefinition(name = "java:module/env/mavenArchetypeDataSource", className = "org.apache.derby.jdbc.ClientXADataSource", portNumber = 1527, serverName = "localhost", databaseName = "examples", user = "examples", password = "examples", properties = {
        "create=true", "weblogic.TestTableName=SQL SELECT 1 FROM SYS.SYSTABLES" })
public class AccountManagerImpl implements AccountManager {

    @PersistenceContext
    private EntityManager em;

    public void depositOnAccount(String name, float amount) {
        Account account = em.find(Account.class, name);
        if (account == null) {
            account = new Account();
            account.setName(name);
        }
        account.setAmount(account.getAmount() + amount);
        em.persist(account);
    }

    public Account findAccount(String name) {

        em.getTransaction().begin();
        Connection connection = em.unwrap(java.sql.Connection.class);

        try {
            useDeprecatedOracleConnection(connection);
        } catch (SQLException e) {
            e.printStackTrace();
        }

        try {
            useOracleConnection(connection);
        } catch (SQLException e) {
            e.printStackTrace();
        }

        return em.find(Account.class, name);
    }

    private void useDeprecatedOracleConnection(java.sql.Connection connection) throws SQLException {

        OracleConnection oracleConnection = null;

        if (connection.isWrapperFor(OracleConnection.class)) {
            oracleConnection = connection.unwrap(OracleConnection.class);
        } else {
            // recover, not an oracle connection
        }

        Object[] reportArray = new Object[3];
        STRUCT[] struct = new STRUCT[1];

        ArrayDescriptor arrayDescriptor = new ArrayDescriptor(
                new SQLName("T_REPORT_TABLE", (OracleConnection) connection), connection);
        StructDescriptor structDescriptor = StructDescriptor.createDescriptor("R_REPORT_OBJECT", connection);

        oracle.sql.ARRAY reportsArray = new oracle.sql.ARRAY(arrayDescriptor, connection, struct);

    }

    private void useOracleConnection(java.sql.Connection connection) throws SQLException {

        OracleConnection oracleConnection = null;

        if (connection.isWrapperFor(OracleConnection.class)) {
            oracleConnection = connection.unwrap(OracleConnection.class);
        } else {
            // recover, not an oracle connection
        }

        Object[] reportArray = new Object[3];
        Struct[] struct = new Struct[1];

        int arrayIndex = 0;

        struct[arrayIndex++] = connection.createStruct("R_REPORT_OBJECT", reportArray);

        Array reportsArray = ((OracleConnection) connection).createOracleArray("T_REPORT_TABLE", struct);

    }
}

Wednesday, May 18, 2022

Disable Spring DEBUG in log4j2 logs on Weblogic

HOWTO

There is dump of all environment variables in Weblogic log due to Spring initialization

2022-05-12 14:13:43,673;DEBUG;com.bea.core.repackaged.springframework.core.env.AbstractEnvironment;<init>();125;Initialized StandardEnvironment with PropertySources

To remove it add logger for com.bea.core.repackaged.springframework into log4j.xml file

    <logger name="com.bea.core.repackaged.springframework" additivity="false">
        <level value="error" />
        <appender-ref ref="some-appender"/>
    </logger>

Check in Weblogic logs

weblogic.log:<May 18, 2022 10:24:09,804 AM CEST> <Notice> <Stdout> <BEA-000000> <2022-05-18 10:24:09,804 [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' DEBUG Level value for com.bea.core.repackaged.springframework is [error].>
weblogic.log:<May 18, 2022 10:24:09,804 AM CEST> <Notice> <Stdout> <BEA-000000> <2022-05-18 10:24:09,804 [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' DEBUG com.bea.core.repackaged.springframework level set to ERROR>

Sunday, April 3, 2022

Running JSF 1.1 application on Weblogic 12.2.1.4 with latest patches

HOWTO

Weblogic Classloader Analysis https://danielveselka.blogspot.com/2013/02/weblogic-classloader-analysis-tool.html
JSF 1 app on Weblogic https://danielveselka.blogspot.com/2013/02/deploy-jsf-11-application-on-weblogic.html
Java EE Descriptor Schemas https://www.oracle.com/webfolder/technetwork/jsc/xml/ns/javaee/index.html#2

javax.faces.FacesException: Expression Error: Named Object: not found

Web app configuration files - placed into WEB-INF

faces-config.xml - JSF specific
web.xml - web app
weblogic.xml - app server specific

Debug compiled JSP pages - use keepgenerated in weblogic.xml to see produced Java code

jsp-descriptor https://docs.oracle.com/cd/E11035_01/wls100/webapp/weblogic_xml.html#wp1038491

working-dir

internally generated directory

The name of a directory where WebLogic Server saves the generated Java and compiled class files for a JSP.

keepgenerated

false

Saves the Java files that are generated as an intermediary step in the JSP compilation process. Unless this parameter is set to true, the intermediate Java files are deleted after they are compiled.

TLD files - add custom files into WEB-INF

<%@ taglib uri="/WEB-INF/tags/customTags.tld"  prefix="tt"%>

Faces config - add custom files in faces-config.xml

  <init-param>
   <param-name>config</param-name>
   <param-value>/WEB-INF/custom-config.xml,/WEB-INF/other-custom-config.xml
   </param-value>
  </init-param>

Java EE: XML Schemas for Java EE Deployment Descriptors

https://www.oracle.com/webfolder/technetwork/jsc/xml/ns/javaee/index.html
https://danielveselka.blogspot.com/2013/02/weblogic-12c-java-ee-6-decriptors.html
Java EE 8 tutorial https://javaee.github.io/tutorial/toc.html
Java EE 8 samples code https://github.com/javaee-samples/javaee8-samples
Java EE 7 samples https://github.com/javaee-samples/javaee7-samples

-	Java EE 8 Schema Resources
-	Java EE 7 Schema Resources
-	Java EE 6 Schema Resources
-	Java EE 5 Schema Resources
-	J2EE 1.4 XML Schemas
-	J2EE 1.3 DTDs
-	J2EE 1.2 DTDs

Monday, March 21, 2022

Create GihHub Action with Maven build

HOWTO

GitHub

https://github.com/dveselka/java-tutorial/tree/master/.github/workflows

Workflow file

# This workflow will build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven

name: Java CI with Maven

on: [push]

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Set up JDK 11
      uses: actions/setup-java@v2
      with:
        java-version: '11'
        distribution: 'temurin'
        cache: maven
    - name: Build with Maven
      run: mvn -B package --file pom.xml

Run list

Job detail

Wednesday, March 16, 2022

JDK 11 - garbage collector logging

HOWTO

GitHub

* test class https://github.com/dveselka/java-tutorial/blob/master/src/main/java/gc/LogGC.java

GC logs with timestamp -Xlog:gc*::time

[2022-03-16T22:30:42.734+0100] GC(30) Pause Full (G1 Compaction Pause)
[2022-03-16T22:30:42.734+0100] GC(30) Phase 1: Mark live objects
[2022-03-16T22:30:43.663+0100] GC(30) Phase 1: Mark live objects 929.512ms
[2022-03-16T22:30:43.663+0100] GC(30) Phase 2: Prepare for compaction
[2022-03-16T22:30:43.941+0100] GC(30) Phase 2: Prepare for compaction 277.577ms
[2022-03-16T22:30:43.941+0100] GC(30) Phase 3: Adjust pointers
[2022-03-16T22:30:44.372+0100] GC(30) Phase 3: Adjust pointers 430.642ms
[2022-03-16T22:30:44.372+0100] GC(30) Phase 4: Compact heap
[2022-03-16T22:30:44.748+0100] GC(30) Phase 4: Compact heap 375.878ms
[2022-03-16T22:30:44.751+0100] GC(30) Eden regions: 0->0(99)
[2022-03-16T22:30:44.751+0100] GC(30) Survivor regions: 0->0(13)
[2022-03-16T22:30:44.751+0100] GC(30) Old regions: 1541->1539
[2022-03-16T22:30:44.751+0100] GC(30) Archive regions: 0->0
[2022-03-16T22:30:44.751+0100] GC(30) Humongous regions: 129->129
[2022-03-16T22:30:44.751+0100] GC(30) Metaspace: 3704K(3904K)->3704K(3904K) NonClass: 3407K(3520K)->3407K(3520K) Class: 297K(384K)->297K(384K)
[2022-03-16T22:30:44.751+0100] GC(30) Pause Full (G1 Compaction Pause) 3331M->3330M(3964M) 2017.026ms
[2022-03-16T22:30:44.751+0100] GC(30) User=15.35s Sys=0.02s Real=2.02s
[2022-03-16T22:30:44.751+0100] GC(17) Concurrent Rebuild Remembered Sets 3586.878ms
[2022-03-16T22:30:44.751+0100] GC(17) Concurrent Mark Abort
[2022-03-16T22:30:44.751+0100] GC(17) Concurrent Mark Cycle 5637.293ms
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.base/java.util.HashMap.resize(HashMap.java:702)
    at java.base/java.util.HashMap.putVal(HashMap.java:661)
    at java.base/java.util.HashMap.put(HashMap.java:610)
    at gc.LogGC.main(LogGC.java:15)
[2022-03-16T22:30:44.755+0100] Heap
[2022-03-16T22:30:44.755+0100]  garbage-first heap   total 4059136K, used 3412405K [0x0000000708400000, 0x0000000800000000)
[2022-03-16T22:30:44.755+0100]   region size 2048K, 1 young (2048K), 0 survivors (0K)
[2022-03-16T22:30:44.755+0100]  Metaspace       used 3801K, committed 3968K, reserved 1056768K
[2022-03-16T22:30:44.755+0100]   class space    used 307K, committed 384K, reserved 1048576K

GC logs with -Xlog:gc*

[0.002s][warning][logging] Output options for existing outputs are ignored.
[0.016s][info   ][gc     ] Using G1
[0.019s][info   ][gc,init] Version: 17.0.1+12 (release)
[0.019s][info   ][gc,init] CPUs: 8 total, 8 available
[0.019s][info   ][gc,init] Memory: 15849M
[0.019s][info   ][gc,init] Large Page Support: Disabled
[0.019s][info   ][gc,init] NUMA Support: Disabled
[0.019s][info   ][gc,init] Compressed Oops: Enabled (Zero based)
[0.019s][info   ][gc,init] Heap Region Size: 2M
[0.019s][info   ][gc,init] Heap Min Capacity: 8M
[0.019s][info   ][gc,init] Heap Initial Capacity: 248M
[0.019s][info   ][gc,init] Heap Max Capacity: 3964M
[0.019s][info   ][gc,init] Pre-touch: Disabled
[0.019s][info   ][gc,init] Parallel Workers: 8
[0.019s][info   ][gc,init] Concurrent Workers: 2
[0.019s][info   ][gc,init] Concurrent Refinement Workers: 8
[0.019s][info   ][gc,init] Periodic GC: Disabled


[4.399s][info][gc,heap     ] GC(31) Survivor regions: 12->12(12)
[4.399s][info][gc,heap     ] GC(31) Old regions: 1535->1563
[4.399s][info][gc,heap     ] GC(31) Archive regions: 0->0
[4.399s][info][gc,heap     ] GC(31) Humongous regions: 244->244
[4.399s][info][gc,metaspace] GC(31) Metaspace: 3706K(3904K)->3706K(3904K) NonClass: 3409K(3520K)->3409K(3520K) Class: 297K(384K)->297K(384K)
[4.399s][info][gc          ] GC(31) Pause Young (Normal) (G1 Preventive Collection) 3632M->3637M(3716M) 34.114ms
[4.399s][info][gc,cpu      ] GC(31) User=0.23s Sys=0.01s Real=0.04s
[4.407s][info][gc,start    ] GC(32) Pause Young (Normal) (G1 Preventive Collection)
[4.407s][info][gc,task     ] GC(32) Using 8 workers of 8 for evacuation
[4.429s][info][gc,phases   ] GC(32)   Pre Evacuate Collection Set: 0.2ms
[4.429s][info][gc,phases   ] GC(32)   Merge Heap Roots: 0.1ms
[4.429s][info][gc,phases   ] GC(32)   Evacuate Collection Set: 21.4ms
[4.429s][info][gc,phases   ] GC(32)   Post Evacuate Collection Set: 0.1ms
[4.429s][info][gc,phases   ] GC(32)   Other: 0.1ms
[4.429s][info][gc,heap     ] GC(32) Eden regions: 12->0(80)
[4.429s][info][gc,heap     ] GC(32) Survivor regions: 12->12(12)
[4.429s][info][gc,heap     ] GC(32) Old regions: 1563->1577
[4.429s][info][gc,heap     ] GC(32) Archive regions: 0->0
[4.429s][info][gc,heap     ] GC(32) Humongous regions: 244->244
[4.429s][info][gc,metaspace] GC(32) Metaspace: 3706K(3904K)->3706K(3904K) NonClass: 3409K(3520K)->3409K(3520K) Class: 297K(384K)->297K(384K)
[4.429s][info][gc          ] GC(32) Pause Young (Normal) (G1 Preventive Collection) 3661M->3666M(3716M) 21.847ms
[4.429s][info][gc,cpu      ] GC(32) User=0.14s Sys=0.00s Real=0.02s
[4.430s][info][gc,start    ] GC(33) Pause Young (Normal) (G1 Humongous Allocation)
[4.430s][info][gc,task     ] GC(33) Using 8 workers of 8 for evacuation
[4.443s][info][gc,phases   ] GC(33)   Pre Evacuate Collection Set: 0.1ms
[4.443s][info][gc,phases   ] GC(33)   Merge Heap Roots: 0.0ms
[4.443s][info][gc,phases   ] GC(33)   Evacuate Collection Set: 11.5ms
[4.443s][info][gc,phases   ] GC(33)   Post Evacuate Collection Set: 0.5ms
[4.443s][info][gc,phases   ] GC(33)   Other: 0.1ms
[4.443s][info][gc,heap     ] GC(33) Eden regions: 2->0(93)
[4.443s][info][gc,heap     ] GC(33) Survivor regions: 12->2(12)
[4.443s][info][gc,heap     ] GC(33) Old regions: 1577->1591
[4.443s][info][gc,heap     ] GC(33) Archive regions: 0->0
[4.443s][info][gc,heap     ] GC(33) Humongous regions: 244->244
[4.443s][info][gc,metaspace] GC(33) Metaspace: 3706K(3904K)->3706K(3904K) NonClass: 3409K(3520K)->3409K(3520K) Class: 297K(384K)->297K(384K)
[4.443s][info][gc          ] GC(33) Pause Young (Normal) (G1 Humongous Allocation) 3670M->3672M(3816M) 12.175ms
[4.443s][info][gc,cpu      ] GC(33) User=0.07s Sys=0.00s Real=0.01s
[4.443s][info][gc,ergo     ] Attempting full compaction
[4.443s][info][gc,task     ] GC(34) Using 8 workers of 8 for full compaction
[4.443s][info][gc,start    ] GC(34) Pause Full (G1 Compaction Pause)
[4.449s][info][gc,phases,start] GC(34) Phase 1: Mark live objects
[5.430s][info][gc,phases      ] GC(34) Phase 1: Mark live objects 980.544ms
[5.430s][info][gc,phases,start] GC(34) Phase 2: Prepare for compaction
[5.443s][info][gc,phases      ] GC(34) Phase 2: Prepare for compaction 13.229ms
[5.443s][info][gc,phases,start] GC(34) Phase 3: Adjust pointers
[5.738s][info][gc,phases      ] GC(34) Phase 3: Adjust pointers 295.030ms
[5.738s][info][gc,phases,start] GC(34) Phase 4: Compact heap
[5.756s][info][gc,phases      ] GC(34) Phase 4: Compact heap 17.952ms
[5.785s][info][gc,heap        ] GC(34) Eden regions: 0->0(99)
[5.785s][info][gc,heap        ] GC(34) Survivor regions: 2->0(12)
[5.785s][info][gc,heap        ] GC(34) Old regions: 1591->1541
[5.785s][info][gc,heap        ] GC(34) Archive regions: 0->0
[5.785s][info][gc,heap        ] GC(34) Humongous regions: 244->129
[5.785s][info][gc,metaspace   ] GC(34) Metaspace: 3706K(3904K)->3706K(3904K) NonClass: 3409K(3520K)->3409K(3520K) Class: 297K(384K)->297K(384K)
[5.785s][info][gc             ] GC(34) Pause Full (G1 Compaction Pause) 3672M->3331M(3964M) 1341.941ms
[5.785s][info][gc,cpu         ] GC(34) User=9.83s Sys=0.22s Real=1.35s
[5.785s][info][gc,ergo        ] Attempting maximum full compaction clearing soft references
[5.785s][info][gc,task        ] GC(35) Using 8 workers of 8 for full compaction
[5.786s][info][gc,start       ] GC(35) Pause Full (G1 Compaction Pause)
[5.786s][info][gc,phases,start] GC(35) Phase 1: Mark live objects
[6.797s][info][gc,phases      ] GC(35) Phase 1: Mark live objects 1011.022ms
[6.797s][info][gc,phases,start] GC(35) Phase 2: Prepare for compaction
[7.091s][info][gc,phases      ] GC(35) Phase 2: Prepare for compaction 293.850ms
[7.091s][info][gc,phases,start] GC(35) Phase 3: Adjust pointers
[7.551s][info][gc,phases      ] GC(35) Phase 3: Adjust pointers 460.264ms
[7.551s][info][gc,phases,start] GC(35) Phase 4: Compact heap
[7.967s][info][gc,phases      ] GC(35) Phase 4: Compact heap 416.610ms
[7.971s][info][gc,heap        ] GC(35) Eden regions: 0->0(99)
[7.971s][info][gc,heap        ] GC(35) Survivor regions: 0->0(12)
[7.971s][info][gc,heap        ] GC(35) Old regions: 1541->1540
[7.971s][info][gc,heap        ] GC(35) Archive regions: 0->0
[7.971s][info][gc,heap        ] GC(35) Humongous regions: 129->129
[7.971s][info][gc,metaspace   ] GC(35) Metaspace: 3706K(3904K)->3706K(3904K) NonClass: 3409K(3520K)->3409K(3520K) Class: 297K(384K)->297K(384K)
[7.971s][info][gc             ] GC(35) Pause Full (G1 Compaction Pause) 3331M->3330M(3964M) 2185.032ms
[7.971s][info][gc,cpu         ] GC(35) User=15.44s Sys=0.03s Real=2.18s
[7.971s][info][gc,marking     ] GC(19) Concurrent Mark From Roots 5527.878ms
[7.971s][info][gc,marking     ] GC(19) Concurrent Mark Abort
[7.971s][info][gc             ] GC(19) Concurrent Mark Cycle 5539.567ms
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.base/java.util.HashMap.resize(HashMap.java:702)
    at java.base/java.util.HashMap.putVal(HashMap.java:661)
    at java.base/java.util.HashMap.put(HashMap.java:610)
    at gc.LogGC.main(LogGC.java:15)
[7.973s][info][gc,heap,exit   ] Heap
[7.973s][info][gc,heap,exit   ]  garbage-first heap   total 4059136K, used 3412405K [0x0000000708400000, 0x0000000800000000)
[7.973s][info][gc,heap,exit   ]   region size 2048K, 1 young (2048K), 0 survivors (0K)
[7.973s][info][gc,heap,exit   ]  Metaspace       used 3802K, committed 3968K, reserved 1056768K
[7.973s][info][gc,heap,exit   ]   class space    used 307K, committed 384K, reserved 1048576K