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https://issues.apache.org/jira/browse/IMPALA-9900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17146685#comment-17146685
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Laszlo Gaal commented on IMPALA-9900:
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Pinging [~vihangk1]: IIRC you looked at this in the past.
> High rate log spam during FE tests
> ----------------------------------
>
> Key: IMPALA-9900
> URL: https://issues.apache.org/jira/browse/IMPALA-9900
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 4.0
> Reporter: Laszlo Gaal
> Priority: Critical
>
> During recent runs of the gerrit-verify-dryrun job FE tests exhibited a
> disturbing tendency: all impalad instances emitted almost 1 GB's worth of
> Java exception traces into their ERROR logfiles in a short, roughly 2 minute
> period. This bloats the archived logs pretty badly, because the contents of
> the ERROR log is replicated in the WARNING and in the INFO log as well,
> resulting in about 6 GB's of wasted space on the build server. This also
> makes it hard to extract meaningful information from those logs.
> The latest example is
> https://jenkins.impala.io/job/ubuntu-16.04-from-scratch/11102/ (the build is
> currently locked to prevent it from being cleaned up); the affected files are
> archive/Impala/logs_static/logs/ee_tests/impalad{,node1,node2}.ERROR. The
> spam runs are present between log timestamps 21:05 to 21:07, the first error
> is
> {code}
> E0624 21:05:28.938853 19419 TransactionKeepalive.java:137] Unexpected
> exception thrown
> Java exception follows:
> java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError:
> org/apache/impala/common/TransactionKeepalive$HeartbeatContext
> at
> org.apache.impala.common.TransactionKeepalive$DaemonThread.run(TransactionKeepalive.java:114)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.NoClassDefFoundError:
> org/apache/impala/common/TransactionKeepalive$HeartbeatContext
> ... 2 more
> Caused by: java.lang.ClassNotFoundException:
> org.apache.impala.common.TransactionKeepalive$HeartbeatContext
> at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
> ... 2 more
> {code} then the repeated pattern is
> {code}
> E0624 21:05:28.939031 19419 TransactionKeepalive.java:137] Unexpected
> exception thrown
> Java exception follows:
> java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError:
> at
> org.apache.impala.common.TransactionKeepalive$DaemonThread.run(TransactionKeepalive.java:114)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.NoClassDefFoundError:
> ... 2 more
> {code}
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