Hey all,

We are facing the a reindex issue with with Oak (1.4.8) when the async reindex 
gets triggered, this has been going on for 3 days now and because of this the 
datastore has grown to 1TB of data because it keeps on trying to reindex the 
Lucene index. Could anyone help me in what would be the best approach to fix 
this? The repo itself is 100GB big, so we are trying to stall deleting the 
entire index because it would take one day for an entire reindex, making the 
production environment unaccessible, while not even being sure if that would 
fix it.

The exception being thrown:

20.09.2017 09:08:07.348 *WARN* [aysnc-index-update-async] 
org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate [async] The index 
update is still failing
org.apache.jackrabbit.oak.api.CommitFailedException: OakLucene0005: Failed to 
remove the index entries of the removed subtree 
/var/eventing/distribution/7ac221b3-0775-4072-a764-c396707c38bf/2017/9/14
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor.childNodeDeleted(LuceneIndexEditor.java:281)
    at 
org.apache.jackrabbit.oak.spi.commit.CompositeEditor.childNodeDeleted(CompositeEditor.java:135)
    at 
org.apache.jackrabbit.oak.spi.commit.VisibleEditor.childNodeDeleted(VisibleEditor.java:114)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:166)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:515)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:531)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:531)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:531)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord$2.childNodeChanged(MapRecord.java:399)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord$3.childNodeChanged(MapRecord.java:440)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:483)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:432)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:390)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:584)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord$2.childNodeChanged(MapRecord.java:399)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:456)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:390)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:584)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
    at 
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:456)
    at 
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:584)
    at 
org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
    at 
org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.updateIndex(AsyncIndexUpdate.java:588)
    at 
org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.runWhenPermitted(AsyncIndexUpdate.java:463)
    at 
org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.run(AsyncIndexUpdate.java:345)
    at 
org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:118)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
    at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.EOFException: reached end of stream after reading 0 bytes; 
1047552 bytes expected
    at com.google.common.io.ByteStreams.readFully(ByteStreams.java:697)
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexFile.loadBlob(OakDirectory.java:360)
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexFile.readBytes(OakDirectory.java:413)
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexInput.readBytes(OakDirectory.java:532)
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexInput.readByte(OakDirectory.java:539)
    at org.apache.lucene.store.DataInput.readVInt(DataInput.java:108)
    at 
org.apache.lucene.store.CompoundFileDirectory.readEntries(CompoundFileDirectory.java:137)
    at 
org.apache.lucene.store.CompoundFileDirectory.<init>(CompoundFileDirectory.java:104)
    at 
org.apache.lucene.index.SegmentReader.readFieldInfos(SegmentReader.java:202)
    at 
org.apache.lucene.index.IndexWriter.getFieldNumberMap(IndexWriter.java:818)
    at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:770)
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditorContext.getWriter(LuceneIndexEditorContext.java:199)
    at 
org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor.childNodeDeleted(LuceneIndexEditor.java:275)
    ... 34 common frames omitted

Thanks!
Roy

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