[jira] [Commented] (OAK-1545) NPE in SegmentTracker

["Alex Parvulescu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-1545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13937575#comment-13937575 ] 

Alex Parvulescu commented on OAK-1545:
--------------------------------------

Following javadocs it looks like the refid on the _Segment_ is null on bulk segments, so the NPE happens when the SegmentTracker tries to do something that resembles a cache eviction when it goes over the allowed size.

I'm not sure what the _segments_'s role is here, it looks like a cache but it is not used for reading the segments, is this maybe a WIP still?

> NPE in SegmentTracker
> ---------------------
>
>                 Key: OAK-1545
>                 URL: https://issues.apache.org/jira/browse/OAK-1545
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core, segmentmk
>            Reporter: Alex Parvulescu
>
> There is a NPE happening on the SegmentTracker, on what appears to be the cache flush of bulk segments.
> {code}
> java.lang.NullPointerException: null
> 	at org.apache.jackrabbit.oak.plugins.segment.Segment.getSegmentId(Segment.java:162)
> 	at org.apache.jackrabbit.oak.plugins.segment.SegmentTracker.getSegment(SegmentTracker.java:103)
> 	at org.apache.jackrabbit.oak.plugins.segment.SegmentId.getSegment(SegmentId.java:81)
> 	at org.apache.jackrabbit.oak.plugins.segment.Record.getSegment(Record.java:68)
> 	at org.apache.jackrabbit.oak.plugins.segment.BlockRecord.read(BlockRecord.java:52)
> 	at org.apache.jackrabbit.oak.plugins.segment.SegmentStream.read(SegmentStream.java:156)
> 	at org.apache.jackrabbit.oak.plugins.segment.SegmentStream.read(SegmentStream.java:125)
> 	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1792)
> 	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1769)
> 	at org.apache.commons.io.IOUtils.copy(IOUtils.java:1744)
> 	at org.apache.jackrabbit.vault.packaging.impl.JcrPackageImpl.getPackage(JcrPackageImpl.java:346)
> 	at com.day.jcr.vault.packaging.impl.JrVltJcrPackageAdapter.getPackage(JrVltJcrPackageAdapter.java:86)
> 	at com.adobe.granite.installer.factory.packages.impl.PackageTransformer$InstallPackageTask.execute(PackageTransformer.java:278)
> 	at org.apache.sling.installer.core.impl.OsgiInstallerImpl.executeTasks(OsgiInstallerImpl.java:733)
> 	at org.apache.sling.installer.core.impl.OsgiInstallerImpl.run(OsgiInstallerImpl.java:247)
> 	at java.lang.Thread.run(Thread.java:744)
> {code}



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