Hanisha Koneru created HDFS-13238:
-------------------------------------
Summary: Missing EC Data block throws warn message with full
stackTrace
Key: HDFS-13238
URL: https://issues.apache.org/jira/browse/HDFS-13238
Project: Hadoop HDFS
Issue Type: Improvement
Components: erasure-coding, hdfs
Reporter: Hanisha Koneru
If an EC data block is missing/ corrupted, then the following warning message
is thrown when client tries to read the file.
{code:java}
$ hdfs dfs -get /user/abc/file1
2018-03-06 22:53:32,156 WARN impl.BlockReaderFactory: I/O error constructing
remote block reader.
java.io.IOException: Got error, status=ERROR, status message opReadBlock
BP-1641043599-127.0.0.1-1520368608283:blk_-9223372036854775776_1002 received
exception java.io.FileNotFoundException: BlockId -9223372036854775776 is not
valid., for OP_READ_BLOCK, self=/127.0.0.1.0.2:60502, remote=/127.0.0.1:9866,
for file /user/abc/file1, for pool BP-1641043599-127.0.0.1-1520368608283 block
-9223372036854775776_1002
at
org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:134)
at
org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:110)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderRemote.checkSuccess(BlockReaderRemote.java:447)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderRemote.newBlockReader(BlockReaderRemote.java:415)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReader(BlockReaderFactory.java:860)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:756)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:390)
at org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:644)
at
org.apache.hadoop.hdfs.DFSStripedInputStream.createBlockReader(DFSStripedInputStream.java:256)
at org.apache.hadoop.hdfs.StripeReader.readChunk(StripeReader.java:293)
at org.apache.hadoop.hdfs.StripeReader.readStripe(StripeReader.java:323)
at
org.apache.hadoop.hdfs.DFSStripedInputStream.readOneStripe(DFSStripedInputStream.java:318)
at
org.apache.hadoop.hdfs.DFSStripedInputStream.readWithStrategy(DFSStripedInputStream.java:391)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:815)
at java.io.DataInputStream.read(DataInputStream.java:100)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:94)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:68)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:129)
at
org.apache.hadoop.fs.shell.CommandWithDestination$TargetFileSystem.writeStreamToFile(CommandWithDestination.java:485)
at
org.apache.hadoop.fs.shell.CommandWithDestination.copyStreamToTarget(CommandWithDestination.java:407)
at
org.apache.hadoop.fs.shell.CommandWithDestination.copyFileToTarget(CommandWithDestination.java:342)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:277)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:262)
at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:331)
at org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:303)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processPathArgument(CommandWithDestination.java:257)
at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:285)
at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:269)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processArguments(CommandWithDestination.java:228)
at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:120)
at org.apache.hadoop.fs.shell.Command.run(Command.java:176)
at org.apache.hadoop.fs.FsShell.run(FsShell.java:328)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
at org.apache.hadoop.fs.FsShell.main(FsShell.java:391)
2018-03-06 22:53:32,167 WARN hdfs.DFSClient: Failed to connect to
/127.0.0.1:9866 for
blockBP-1641043599-127.0.0.1-1520368608283:blk_-9223372036854775776_1002
java.io.IOException: Got error, status=ERROR, status message opReadBlock
BP-1641043599-127.0.0.1-1520368608283:blk_-9223372036854775776_1002 received
exception java.io.FileNotFoundException: BlockId -9223372036854775776 is not
valid., for OP_READ_BLOCK, self=/127.0.0.1:60502, remote=/127.0.0.1:9866, for
file /user/abc/file1, for pool BP-1641043599-127.0.0.1-1520368608283 block
-9223372036854775776_1002
at
org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:134)
at
org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:110)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderRemote.checkSuccess(BlockReaderRemote.java:447)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderRemote.newBlockReader(BlockReaderRemote.java:415)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReader(BlockReaderFactory.java:860)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:756)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:390)
at org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:644)
at
org.apache.hadoop.hdfs.DFSStripedInputStream.createBlockReader(DFSStripedInputStream.java:256)
at org.apache.hadoop.hdfs.StripeReader.readChunk(StripeReader.java:293)
at org.apache.hadoop.hdfs.StripeReader.readStripe(StripeReader.java:323)
at
org.apache.hadoop.hdfs.DFSStripedInputStream.readOneStripe(DFSStripedInputStream.java:318)
at
org.apache.hadoop.hdfs.DFSStripedInputStream.readWithStrategy(DFSStripedInputStream.java:391)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:815)
at java.io.DataInputStream.read(DataInputStream.java:100)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:94)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:68)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:129)
at
org.apache.hadoop.fs.shell.CommandWithDestination$TargetFileSystem.writeStreamToFile(CommandWithDestination.java:485)
at
org.apache.hadoop.fs.shell.CommandWithDestination.copyStreamToTarget(CommandWithDestination.java:407)
at
org.apache.hadoop.fs.shell.CommandWithDestination.copyFileToTarget(CommandWithDestination.java:342)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:277)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:262)
at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:331)
at org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:303)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processPathArgument(CommandWithDestination.java:257)
at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:285)
at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:269)
at
org.apache.hadoop.fs.shell.CommandWithDestination.processArguments(CommandWithDestination.java:228)
at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:120)
at org.apache.hadoop.fs.shell.Command.run(Command.java:176)
at org.apache.hadoop.fs.FsShell.run(FsShell.java:328)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
at org.apache.hadoop.fs.FsShell.main(FsShell.java:391)
2018-03-06 22:53:32,182 WARN hdfs.DFSClient:
[DatanodeInfoWithStorage[127.0.0.1:9866,DS-133ffa99-2ddb-4er4-9v8c-e14f3a432b8e,DISK]]
are unavailable and all striping blocks on them are lost. IgnoredNodes =
null{code}
It would be nice if this full stack trace was not thrown to the client. We can
instead put out a warning message that a data block is missing and will be
reconstructed (or as the case may be).
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