jackrabbit-oak-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Andrei Dulceanu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-8006) SegmentBlob#readLongBlobId might cause SegmentNotFoundException on standby
Date Tue, 29 Jan 2019 10:03:00 GMT

    [ https://issues.apache.org/jira/browse/OAK-8006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16754812#comment-16754812
] 

Andrei Dulceanu commented on OAK-8006:
--------------------------------------

Backported to 1.10 at r1852429.

> SegmentBlob#readLongBlobId might cause SegmentNotFoundException on standby
> --------------------------------------------------------------------------
>
>                 Key: OAK-8006
>                 URL: https://issues.apache.org/jira/browse/OAK-8006
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: segment-tar, tarmk-standby
>    Affects Versions: 1.6.0
>            Reporter: Andrei Dulceanu
>            Assignee: Andrei Dulceanu
>            Priority: Major
>              Labels: cold-standby
>             Fix For: 1.12, 1.10.1, 1.8.12
>
>         Attachments: OAK-8006.patch
>
>
> When persisting a segment transferred from master, among others, the cold standby needs
to read the binary references from the segment. While this usually doesn't involve any additional
reads from any other segments, there is a special case concerning binary IDs larger than
4092 bytes. These can live in other segments (which got transferred prior to the current segment
and are already on the standby), but it might also be the case that the binary ID is stored
in the same segment. If this happens, the call to {{blobId.getSegment()}}[0], triggers
a new read of the current, un-persisted segment . Thus, a {{SegmentNotFoundException}} is
thrown:
> {noformat}
> 22.01.2019 09:35:59.345 *ERROR* [standby-run-1] org.apache.jackrabbit.oak.segment.standby.client.StandbyClientSync
Failed synchronizing state.
> org.apache.jackrabbit.oak.segment.SegmentNotFoundException: Segment d40a9da6-06a2-4dc0-ab91-5554a33c02b0
not found
>         at org.apache.jackrabbit.oak.segment.file.AbstractFileStore.readSegmentUncached(AbstractFileStore.java:284)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.file.FileStore.lambda$readSegment$10(FileStore.java:498)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.SegmentCache$NonEmptyCache.lambda$getSegment$0(SegmentCache.java:163)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4724)
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3522)
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2315)
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2278)
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2193) [com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at com.google.common.cache.LocalCache.get(LocalCache.java:3932) [com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4721)
[com.adobe.granite.osgi.wrapper.guava:15.0.0.0002]
>         at org.apache.jackrabbit.oak.segment.SegmentCache$NonEmptyCache.getSegment(SegmentCache.java:160)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.file.FileStore.readSegment(FileStore.java:498)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.SegmentId.getSegment(SegmentId.java:153)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.RecordId.getSegment(RecordId.java:98) [org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.SegmentBlob.readLongBlobId(SegmentBlob.java:206)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.SegmentBlob.readBlobId(SegmentBlob.java:163)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.file.AbstractFileStore$3.consume(AbstractFileStore.java:262)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.Segment.forEachRecord(Segment.java:601)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.file.AbstractFileStore.readBinaryReferences(AbstractFileStore.java:257)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.file.FileStore.writeSegment(FileStore.java:533)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.standby.client.StandbyClientSyncExecution.copySegmentFromPrimary(StandbyClientSyncExecution.java:225)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.standby.client.StandbyClientSyncExecution.copySegmentHierarchyFromPrimary(StandbyClientSyncExecution.java:194)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.standby.client.StandbyClientSyncExecution.compareAgainstBaseState(StandbyClientSyncExecution.java:101)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.standby.client.StandbyClientSyncExecution.execute(StandbyClientSyncExecution.java:76)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.jackrabbit.oak.segment.standby.client.StandbyClientSync.run(StandbyClientSync.java:165)
[org.apache.jackrabbit.oak-segment-tar:1.10.0]
>         at org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:347)
[org.apache.sling.commons.scheduler:2.7.2]
>         at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [org.apache.sling.commons.scheduler:2.7.2]
>         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
>         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
>         at java.base/java.lang.Thread.run(Thread.java:834){noformat}
>  
> [0] https://github.com/apache/jackrabbit-oak/blob/trunk/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentBlob.java#L205



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message