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https://issues.apache.org/jira/browse/LUCENE-9867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17308363#comment-17308363
]
Alexander L edited comment on LUCENE-9867 at 3/25/21, 4:45 AM:
---------------------------------------------------------------
Hi [~rcmuir], thank you for the quick response!
Regarding the first indexing pattern - it was just our guess that it is more
likely to cause this problem (because we don't commit until the whole large
chunk of documents is added). Unfortunately at the moment we don't have
evidence in the logs which shows which pattern caused the stacktrace above.
Probably you are right and that was pattern #2 as well. I'll add this detail in
the description.
And yes, OOM-caused issue was {{NoSuchFileException}}, here is the stacktrace
for that:
{code:java}
2021-03-10T09:54:19.942+0000
java.nio.file.NoSuchFileException: /data/602d9464e850d13d46b6ee3f/_q.cfe
at
java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
at
java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
at
java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
at
java.base/sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:182)
at java.base/java.nio.channels.FileChannel.open(FileChannel.java:292)
at java.base/java.nio.channels.FileChannel.open(FileChannel.java:345)
at
org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:81)
at
org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
at
org.apache.lucene.codecs.lucene50.Lucene50CompoundReader.readEntries(Lucene50CompoundReader.java:106)
at
org.apache.lucene.codecs.lucene50.Lucene50CompoundReader.<init>(Lucene50CompoundReader.java:70)
at
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.getCompoundReader(Lucene50CompoundFormat.java:70)
at
org.apache.lucene.index.IndexWriter.readFieldInfos(IndexWriter.java:976)
at
org.apache.lucene.index.IndexWriter.getFieldNumberMap(IndexWriter.java:993)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:878)
{code}
was (Author: sqshq):
Hi [~rcmuir], thank you for the quick response!
Regarding the first indexing pattern - it was just our guess that it is more
likely to cause this problem (because we don't commit until the whole large
chunk of documents is added). Unfortunately at the moment we don't have
evidence in the logs which shows the pattern for the stacktrace above. I'll add
this detail in the description.
And you are right, OOM-caused issue was {{NoSuchFileException}}, here is the
stacktrace for that:
{code:java}
2021-03-10T09:54:19.942+0000
java.nio.file.NoSuchFileException: /data/602d9464e850d13d46b6ee3f/_q.cfe
at
java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
at
java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
at
java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
at
java.base/sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:182)
at java.base/java.nio.channels.FileChannel.open(FileChannel.java:292)
at java.base/java.nio.channels.FileChannel.open(FileChannel.java:345)
at
org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:81)
at
org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
at
org.apache.lucene.codecs.lucene50.Lucene50CompoundReader.readEntries(Lucene50CompoundReader.java:106)
at
org.apache.lucene.codecs.lucene50.Lucene50CompoundReader.<init>(Lucene50CompoundReader.java:70)
at
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.getCompoundReader(Lucene50CompoundFormat.java:70)
at
org.apache.lucene.index.IndexWriter.readFieldInfos(IndexWriter.java:976)
at
org.apache.lucene.index.IndexWriter.getFieldNumberMap(IndexWriter.java:993)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:878)
{code}
> CorruptIndexException after failed segment merge caused by No space left on
> device
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-9867
> URL: https://issues.apache.org/jira/browse/LUCENE-9867
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/store
> Affects Versions: 8.5
> Reporter: Alexander L
> Priority: Major
>
> Failed segment merge caused by "No space left on device" can't be recovered
> and Lucene fails with CorruptIndexException after restart. The expectation is
> that Lucene will be able to restart automatically without manual intervention.
> We have 2 indexing patterns:
> * Create and commit an empty index, then start long initial indexing process
> (might take hours), perform a second commit in the end
> * Using existing index, add no more than 4k documents and commit after that
> Seems like the first pattern might cause more problems, but we definitely
> witnessed a similar situation for the second pattern, although it was a bit
> different - caused by {{OutOfMemoryError: Java Heap Space}}, with missing
> {{_q.cfe}} file which produced only {{FileNotFoundException}}, not
> {{CorruptIndexException}}. Please let me know if we need a separate ticket
> for that.
> Lucene version: 8.5.0
> Java version: OpenJDK 11
> OS: CentOS Linux 7
> Kernel: Linux 3.10.0-1160.11.1.el7.x86_64
> Virtualization: kvm
> Filesystem: xfs
> Failed merge stacktrace:
> {code:java}
> 2021-02-02T08:51:51.679+0000
> org.apache.lucene.index.MergePolicy$MergeException: java.io.IOException: No
> space left on device
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
> Caused by: java.io.IOException: No space left on device
> at java.base/sun.nio.ch.FileDispatcherImpl.write0(Native Method)
> at
> java.base/sun.nio.ch.FileDispatcherImpl.write(FileDispatcherImpl.java:62)
> at java.base/sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:113)
> at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:79)
> at java.base/sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:280)
> at java.base/java.nio.channels.Channels.writeFullyImpl(Channels.java:74)
> at java.base/java.nio.channels.Channels.writeFully(Channels.java:97)
> at java.base/java.nio.channels.Channels$1.write(Channels.java:172)
> at
> org.apache.lucene.store.FSDirectory$FSIndexOutput$1.write(FSDirectory.java:416)
> at
> java.base/java.util.zip.CheckedOutputStream.write(CheckedOutputStream.java:74)
> at
> java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
> at
> java.base/java.io.BufferedOutputStream.write(BufferedOutputStream.java:127)
> at
> org.apache.lucene.store.OutputStreamIndexOutput.writeBytes(OutputStreamIndexOutput.java:53)
> at
> org.apache.lucene.store.RateLimitedIndexOutput.writeBytes(RateLimitedIndexOutput.java:73)
> at org.apache.lucene.util.compress.LZ4.encodeLiterals(LZ4.java:159)
> at org.apache.lucene.util.compress.LZ4.encodeSequence(LZ4.java:172)
> at org.apache.lucene.util.compress.LZ4.compress(LZ4.java:441)
> at
> org.apache.lucene.codecs.compressing.CompressionMode$LZ4FastCompressor.compress(CompressionMode.java:165)
> at
> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.flush(CompressingStoredFieldsWriter.java:229)
> at
> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.finishDocument(CompressingStoredFieldsWriter.java:159)
> at
> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.merge(CompressingStoredFieldsWriter.java:636)
> at
> org.apache.lucene.index.SegmentMerger.mergeFields(SegmentMerger.java:229)
> at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:106)
> at
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4463)
> at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4057)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
> {code}
> Followed by failed startup:
> {code:java}
> 2021-02-02T08:52:07.926+0000
> org.apache.lucene.index.CorruptIndexException: Unexpected file read error
> while reading index.
> (resource=BufferedChecksumIndexInput(NIOFSIndexInput(path="/data/5f91aa0b07ce4d5e7beffaa2/segments_578fu")))
> at
> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:291)
> at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:846)
> Caused by: java.nio.file.NoSuchFileException:
> /data/5f91aa0b07ce4d5e7beffaa2/_6lfem.si
> at
> java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
> at
> java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
> at
> java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
> at
> java.base/sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:182)
> at java.base/java.nio.channels.FileChannel.open(FileChannel.java:292)
> at java.base/java.nio.channels.FileChannel.open(FileChannel.java:345)
> at
> org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:81)
> at
> org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
> at
> org.apache.lucene.codecs.lucene70.Lucene70SegmentInfoFormat.read(Lucene70SegmentInfoFormat.java:91)
> at
> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:353)
> at
> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:289)
> ... 33 common frames omitted
> {code}
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