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Posted to notifications@accumulo.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2015/05/08 07:05:00 UTC
[jira] [Created] (ACCUMULO-3783) Unexpected Filesystem Closed
exceptions
Josh Elser created ACCUMULO-3783:
------------------------------------
Summary: Unexpected Filesystem Closed exceptions
Key: ACCUMULO-3783
URL: https://issues.apache.org/jira/browse/ACCUMULO-3783
Project: Accumulo
Issue Type: Bug
Components: master, start, tserver
Reporter: Josh Elser
Fix For: 1.8.0, 1.7.1
Noticed this in testing 1.7.0 on my laptop tonight. Started two tservers, one continuous ingest client and would kill/restart one of the tservers occasionally.
{noformat}
Failed to close map file
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:795)
at org.apache.hadoop.hdfs.DFSInputStream.close(DFSInputStream.java:629)
at java.io.FilterInputStream.close(FilterInputStream.java:181)
at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader.close(CachableBlockFile.java:409)
at org.apache.accumulo.core.file.rfile.RFile$Reader.close(RFile.java:921)
at org.apache.accumulo.tserver.tablet.Compactor.compactLocalityGroup(Compactor.java:391)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:214)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
null
java.nio.channels.ClosedChannelException
at org.apache.hadoop.hdfs.DFSOutputStream.checkClosed(DFSOutputStream.java:1622)
at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:104)
at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:58)
at java.io.DataOutputStream.write(DataOutputStream.java:107)
at org.apache.accumulo.core.file.rfile.bcfile.SimpleBufferedOutputStream.flushBuffer(SimpleBufferedOutputStream.java:39)
at org.apache.accumulo.core.file.rfile.bcfile.SimpleBufferedOutputStream.flush(SimpleBufferedOutputStream.java:68)
at org.apache.hadoop.io.compress.CompressionOutputStream.flush(CompressionOutputStream.java:69)
at org.apache.accumulo.core.file.rfile.bcfile.Compression$FinishOnFlushCompressionStream.flush(Compression.java:66)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:141)
at org.apache.accumulo.core.file.rfile.bcfile.BCFile$Writer$WBlockState.finish(BCFile.java:233)
at org.apache.accumulo.core.file.rfile.bcfile.BCFile$Writer$BlockAppender.close(BCFile.java:320)
at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$BlockWrite.close(CachableBlockFile.java:121)
at org.apache.accumulo.core.file.rfile.RFile$Writer.closeBlock(RFile.java:398)
at org.apache.accumulo.core.file.rfile.RFile$Writer.append(RFile.java:382)
at org.apache.accumulo.tserver.tablet.Compactor.compactLocalityGroup(Compactor.java:356)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:214)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
Filesystem closed
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:795)
at org.apache.hadoop.hdfs.DFSClient.delete(DFSClient.java:1927)
at org.apache.hadoop.hdfs.DistributedFileSystem$12.doCall(DistributedFileSystem.java:638)
at org.apache.hadoop.hdfs.DistributedFileSystem$12.doCall(DistributedFileSystem.java:634)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.delete(DistributedFileSystem.java:634)
at org.apache.accumulo.server.fs.VolumeManagerImpl.deleteRecursively(VolumeManagerImpl.java:193)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:255)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
MinC failed (null) to create hdfs://localhost:8020/accumulo17/tables/2/t-0000011/F00000yd.rf_tmp retrying ...
MajC Failed, extent = 2;5;45
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:795)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1651)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1593)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:397)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:393)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:393)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:337)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:908)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:889)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:126)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:106)
at org.apache.accumulo.core.file.DispatchingFileFactory.openWriter(DispatchingFileFactory.java:78)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:192)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
MajC Failed, extent = 2;45;4
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:795)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1651)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1593)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:397)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:393)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:393)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:337)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:908)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:889)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:126)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:106)
at org.apache.accumulo.core.file.DispatchingFileFactory.openWriter(DispatchingFileFactory.java:78)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:192)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
MajC Failed, extent = 2;35;3
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:795)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1651)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1593)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:397)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:393)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:393)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:337)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:908)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:889)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:126)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:106)
at org.apache.accumulo.core.file.DispatchingFileFactory.openWriter(DispatchingFileFactory.java:78)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:192)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
Filesystem closed
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:795)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1651)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1593)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:397)
at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:393)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:393)
at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:337)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:908)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:889)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:126)
at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:106)
at org.apache.accumulo.core.file.DispatchingFileFactory.openWriter(DispatchingFileFactory.java:78)
at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:192)
at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1981)
at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:2098)
at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
{noformat}
This reminded me of something that [~bills] ran into and tried to get to the bottom of.
My hunch was that somethign registered a shutdown hook which closed the filesystem object. I also remembered that FileSystem instances are cached.
Bill pointed out that he thought this might still be a VFS related issue (despite having nothign to do with VFS). After I noticed a shutdown hook in our VFS usage, I think it's unsafe to be sharing FileSystem instances with VFS code that might also be used by Accumulo for important things like writing to files.
We should get a unique FileSystem instance to provide to any VFS code. We can do this by:
# Setting {{fs.hdfs.impl.disable.cache}} in the Hadoop Configuration we provide to {{FileSystem.get(Configuration)}}
# Call {{FileSystem.newInstance(URI, Configuration)}}.
Either seem to do what we want -- the latter possibly having more reliable semantics than just a configuration value.
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