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Posted to issues@activemq.apache.org by "Justin Bertram (Jira)" <ji...@apache.org> on 2022/09/27 14:36:00 UTC
[jira] [Commented] (ARTEMIS-4019) Journal export runs out of memory
[ https://issues.apache.org/jira/browse/ARTEMIS-4019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17610095#comment-17610095 ]
Justin Bertram commented on ARTEMIS-4019:
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This seems more like a configuration issue than bug to me. The exporter has to read the whole journal and then serialize it to XML. Depending on the size of the journal this can be relatively memory hungry. What happens if you just give the JVM more memory (e.g. {{-Xmx8G}})?
> Journal export runs out of memory
> ----------------------------------
>
> Key: ARTEMIS-4019
> URL: https://issues.apache.org/jira/browse/ARTEMIS-4019
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Environment: SUSE Linux Enterprise Server 15 SP3
> JAVA_ARGS="-XX:+PrintClassHistogram -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512M -Xmx4G -Dhawtio.disableProxy=true -Dhawtio.realm=activemq -Dhawtio.offline=true -Dhawtio.rolePrincipalClasses=org.apache.activemq.artemis.spi.core.security.jaas.RolePrincipal -Djolokia.policyLocation=${ARTEMIS_INSTANCE_ETC_URI}jolokia-access.xml "
> Reporter: Peter Machon
> Priority: Major
>
> To avoid the situation from ARTEMIS-4018 on other nodes in our environment we wanted to export the old journal and reimport it before restarting the upgraded version. The export however runs OOM:
> {noformat}
> /var/opt/apache-artemis/integrationbus>bin/artemis data exp --output /var/opt/apache-artemis/integrationbus/etc/data3.exp
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
> at io.netty.buffer.UnpooledByteBufAllocator.newHeapBuffer(UnpooledByteBufAllocator.java:82)
> at io.netty.buffer.AbstractByteBufAllocator.heapBuffer(AbstractByteBufAllocator.java:169)
> at io.netty.buffer.AbstractByteBufAllocator.heapBuffer(AbstractByteBufAllocator.java:160)
> at io.netty.buffer.Unpooled.buffer(Unpooled.java:119)
> at org.apache.activemq.artemis.core.message.impl.CoreMessage.initBuffer(CoreMessage.java:156)
> at org.apache.activemq.artemis.core.message.impl.CoreMessage.reloadPersistence(CoreMessage.java:1252)
> at org.apache.activemq.artemis.core.message.impl.CoreMessagePersister.decode(CoreMessagePersister.java:85)
> at org.apache.activemq.artemis.core.message.impl.CoreMessagePersister.decode(CoreMessagePersister.java:28)
> at org.apache.activemq.artemis.spi.core.protocol.MessagePersister.decode(MessagePersister.java:120)
> at org.apache.activemq.artemis.core.persistence.impl.journal.DescribeJournal.newObjectEncoding(DescribeJournal.java:623)
> at org.apache.activemq.artemis.cli.commands.tools.xml.XmlDataExporter.processMessageJournal(XmlDataExporter.java:218)
> at org.apache.activemq.artemis.cli.commands.tools.xml.XmlDataExporter.writeXMLData(XmlDataExporter.java:150)
> at org.apache.activemq.artemis.cli.commands.tools.xml.XmlDataExporter.writeOutput(XmlDataExporter.java:144)
> at org.apache.activemq.artemis.cli.commands.tools.xml.XmlDataExporter.process(XmlDataExporter.java:133)
> at org.apache.activemq.artemis.cli.commands.tools.xml.XmlDataExporter.execute(XmlDataExporter.java:100)
> at org.apache.activemq.artemis.cli.Artemis.internalExecute(Artemis.java:160)
> at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:108)
> at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:135)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:566)
> at org.apache.activemq.artemis.boot.Artemis.execute(Artemis.java:134)
> at org.apache.activemq.artemis.boot.Artemis.main(Artemis.java:50){noformat}
> Note: We were attempting to export the old journal with the new broker version.
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