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From "Shao-Chuan Wang (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-6469) FSError in org.apache.cassandra.io.compress.CompressedRandomAccessReader.reBuffer
Date Sat, 11 Jan 2014 07:02:50 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shao-Chuan Wang resolved CASSANDRA-6469.
----------------------------------------

    Resolution: Not A Problem

> FSError in org.apache.cassandra.io.compress.CompressedRandomAccessReader.reBuffer
> ---------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-6469
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6469
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Linux
>            Reporter: Shao-Chuan Wang
>
> We are seeing FSError in the code path of SSTableReader. Noted that, the file can be
read, so suggesting it should not be the file corruption.
> The FileChannel is closed when it tries to call position(). It is not very easily reproducible.
We'll paste here if we hit this again. Thank you.
> ERROR [ReadStage:4332] 2013-12-09 06:13:01,857 CassandraDaemon.java (line 185) Exception
in thread Thread[ReadStage:4332,5,main]
> FSReadError in /mnt/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-jb-342-Data.db
>         at org.apache.cassandra.io.compress.CompressedRandomAccessReader.reBuffer(CompressedRandomAccessReader.java:95)
>         at org.apache.cassandra.io.util.RandomAccessReader.seek(RandomAccessReader.java:280)
>         at org.apache.cassandra.io.util.PoolingSegmentedFile.getSegment(PoolingSegmentedFile.java:41)
>         at org.apache.cassandra.io.sstable.SSTableReader.getFileDataInput(SSTableReader.java:1163)
>         at org.apache.cassandra.db.columniterator.IndexedSliceReader$IndexedBlockFetcher.getNextBlock(IndexedSliceReader.java:362)
>         at org.apache.cassandra.db.columniterator.IndexedSliceReader$IndexedBlockFetcher.fetchMoreData(IndexedSliceReader.java:332)
>         at org.apache.cassandra.db.columniterator.IndexedSliceReader.computeNext(IndexedSliceReader.java:145)
>         at org.apache.cassandra.db.columniterator.IndexedSliceReader.computeNext(IndexedSliceReader.java:45)
>         at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
>         at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
>         at org.apache.cassandra.db.columniterator.SSTableSliceIterator.hasNext(SSTableSliceIterator.java:82)
>         at org.apache.cassandra.db.filter.QueryFilter$2.getNext(QueryFilter.java:157)
>         at org.apache.cassandra.db.filter.QueryFilter$2.hasNext(QueryFilter.java:140)
>         at org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:144)
>         at org.apache.cassandra.utils.MergeIterator$ManyToOne.<init>(MergeIterator.java:87)
>         at org.apache.cassandra.utils.MergeIterator.get(MergeIterator.java:46)
>         at org.apache.cassandra.db.filter.QueryFilter.collateColumns(QueryFilter.java:120)
>         at org.apache.cassandra.db.filter.QueryFilter.collateOnDiskAtom(QueryFilter.java:80)
>         at org.apache.cassandra.db.filter.QueryFilter.collateOnDiskAtom(QueryFilter.java:72)
>         at org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:294)
>         at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:53)
>         at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1468)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1294)
>         at org.apache.cassandra.db.Keyspace.getRow(Keyspace.java:332)
>         at org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:65)
>         at org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1365)
>         at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1897)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:744)
> Caused by: java.nio.channels.ClosedChannelException
>         at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:99)
>         at sun.nio.ch.FileChannelImpl.position(FileChannelImpl.java:250)
>         at org.apache.cassandra.io.compress.CompressedRandomAccessReader.decompressChunk(CompressedRandomAccessReader.java:101)
>         at org.apache.cassandra.io.compress.CompressedRandomAccessReader.reBuffer(CompressedRandomAccessReader.java:87)



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