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https://issues.apache.org/jira/browse/OAK-10826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rishabh Daim resolved OAK-10826.
--------------------------------
Fix Version/s: 1.66.0
Resolution: Fixed
> Misleading warning about missing checkpoint
> -------------------------------------------
>
> Key: OAK-10826
> URL: https://issues.apache.org/jira/browse/OAK-10826
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: store-composite
> Reporter: Daniel Iancu
> Assignee: Rishabh Daim
> Priority: Minor
> Fix For: 1.66.0
>
>
> The CompositeNodeStore logs a WARN message when
> {{NodeStore.checkpointInfo()}} is called with a reference to a checkpoint
> that does not exist. The contract says, in this case the implementation will
> return an empty map. The CompositeNodeStore behaves as specified, but the log
> message indicates something is wrong.
> One occasion when this can happen is the cleanup of unused checkpoints. See
> stack trace of the exception logged by the CompositeNodeStore. The cleanup
> first lists the checkpoints and then gets the info for each of the
> checkpoints. It may happen that one of the checkpoints is released in the
> meantime and {{NodeStore.checkpointInfo()}} is called for a checkpoint that
> does not exist anymore. The cleanup code is is working fine in this case, but
> the warning is misleading.
> {noformat}
> 19.09.2019 05:21:00.686 *WARN*
> [sling-oak-2-org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate-async]
> org.apache.jackrabbit.oak.composite.CompositeNodeStore Checkpoint
> r16d47f757cd-0-2 doesn't exist. Debug info:
> Mount: [default]
> Checkpoints:
> - r16d47f76b54-1-2: {composite.checkpoint.expires=1655270460244,
> creator=AsyncIndexUpdate, composite.checkpoint.created=1568870460244,
> created=2019-09-19T05:21:00.244Z, name=async,
> thread=sling-oak-2-org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate-async}
> - r16d47f76b54-0-2: {composite.checkpoint.expires=1655270460244,
> creator=AsyncIndexUpdate, composite.checkpoint.created=1568870460244,
> created=2019-09-19T05:21:00.244Z, name=fulltext-async,
> thread=sling-oak-1-org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate-fulltext-async}
> /:async node: {fulltext-async = r16d47f76b54-0-2,
> fulltext-async-LastIndexedTo = 2019-09-19T05:21:00.244Z, async-temp: [...],
> fulltext-async-temp: [...], async = r16d47f76b54-1-2, async-LastIndexedTo =
> 2019-09-19T05:21:00.244Z}
> Mount: libs
> Checkpoints:
> - f1d323f2-8a6f-4369-bf5f-608862f8b3b9: {creator=AsyncIndexUpdate,
> created=2019-09-18T18:56:41.352Z, name=async,
> thread=sling-oak-5-org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate-async}
> - 6ae116de-3eb0-4041-b4d1-f629e26d669c: {creator=AsyncIndexUpdate,
> created=2019-09-18T18:56:41.353Z, name=fulltext-async,
> thread=sling-oak-1-org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate-fulltext-async}
> /:async node: {async-temp: [...], fulltext-async-temp: [...],
> fulltext-async-LastIndexedTo = 2019-09-18T18:56:41.353Z, async =
> f1d323f2-8a6f-4369-bf5f-608862f8b3b9, fulltext-async =
> 6ae116de-3eb0-4041-b4d1-f629e26d669c, async-LastIndexedTo =
> 2019-09-18T18:56:41.352Z}
> java.lang.Exception: null
> at
> org.apache.jackrabbit.oak.composite.CompositeNodeStore.checkpointInfo(CompositeNodeStore.java:246)
> [org.apache.jackrabbit.oak-store-composite:1.16.0.R1867074]
> at
> org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.cleanUpCheckpoints(AsyncIndexUpdate.java:675)
> [org.apache.jackrabbit.oak-core:1.16.0.R1867074]
> at
> org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.maybeCleanUpCheckpoints(AsyncIndexUpdate.java:646)
> [org.apache.jackrabbit.oak-core:1.16.0.R1867074]
> at
> org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.runWhenPermitted(AsyncIndexUpdate.java:607)
> [org.apache.jackrabbit.oak-core:1.16.0.R1867074]
> at
> org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.run(AsyncIndexUpdate.java:432)
> [org.apache.jackrabbit.oak-core:1.16.0.R1867074]
> at
> org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:347)
> [org.apache.sling.commons.scheduler:2.7.4]
> at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
> [org.apache.sling.commons.scheduler:2.7.4]
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> at java.base/java.lang.Thread.run(Thread.java:834)
> {noformat}
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