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From "Hanisha Koneru (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12164) CodecUtil throws stacktrace to the client on createRawEncoder/Decoder error
Date Wed, 19 Jul 2017 21:41:00 GMT
Hanisha Koneru created HDFS-12164:
-------------------------------------

             Summary: CodecUtil throws stacktrace to the client on createRawEncoder/Decoder
error
                 Key: HDFS-12164
                 URL: https://issues.apache.org/jira/browse/HDFS-12164
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: erasure-coding
            Reporter: Hanisha Koneru
            Assignee: Hanisha Koneru


While doing filesystem operations on ec dirs/files, the _failure to create raw encoder/decoder_
warning at the client side is accompanied by the stacktrace of the error.
{code}
2017-07-19 21:31:00,209 WARN util.NativeCodeLoader: Unable to load native-hadoop library for
your platform... using builtin-java classes where applicable
2017-07-19 21:31:01,023 WARN erasurecode.CodecUtil: Failed to create raw erasure encoder rs_native,
fallback to next codec if possible
java.lang.ExceptionInInitializerError
	at org.apache.hadoop.io.erasurecode.rawcoder.NativeRSRawErasureCoderFactory.createEncoder(NativeRSRawErasureCoderFactory.java:35)
	at org.apache.hadoop.io.erasurecode.CodecUtil.createRawEncoderWithFallback(CodecUtil.java:177)
	at org.apache.hadoop.io.erasurecode.CodecUtil.createRawEncoder(CodecUtil.java:129)
	at org.apache.hadoop.hdfs.DFSStripedOutputStream.<init>(DFSStripedOutputStream.java:302)
	at org.apache.hadoop.hdfs.DFSOutputStream.newStreamForCreate(DFSOutputStream.java:309)
	at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1216)
	at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1195)
	at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1133)
	at org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:451)
	at org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:448)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:462)
	at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:389)
	at org.apache.hadoop.fs.FilterFileSystem.create(FilterFileSystem.java:181)
	at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1074)
	at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1054)
	at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:943)
	at org.apache.hadoop.fs.shell.CommandWithDestination$TargetFileSystem.create(CommandWithDestination.java:509)
	at org.apache.hadoop.fs.shell.CommandWithDestination$TargetFileSystem.writeStreamToFile(CommandWithDestination.java:484)
	at org.apache.hadoop.fs.shell.CommandWithDestination.copyStreamToTarget(CommandWithDestination.java:407)
	at org.apache.hadoop.fs.shell.CommandWithDestination.copyFileToTarget(CommandWithDestination.java:342)
	at org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:277)
	at org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:262)
	at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:331)
	at org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:303)
	at org.apache.hadoop.fs.shell.CommandWithDestination.processPathArgument(CommandWithDestination.java:257)
	at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:285)
	at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:269)
	at org.apache.hadoop.fs.shell.CommandWithDestination.processArguments(CommandWithDestination.java:228)
	at org.apache.hadoop.fs.shell.CopyCommands$Put.processArguments(CopyCommands.java:286)
	at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:119)
	at org.apache.hadoop.fs.shell.Command.run(Command.java:176)
	at org.apache.hadoop.fs.FsShell.run(FsShell.java:326)
	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:389)
Caused by: java.lang.RuntimeException: hadoop native library cannot be loaded.
	at org.apache.hadoop.io.erasurecode.ErasureCodeNative.checkNativeCodeLoaded(ErasureCodeNative.java:69)
	at org.apache.hadoop.io.erasurecode.rawcoder.NativeRSRawEncoder.<clinit>(NativeRSRawEncoder.java:33)
{code}

We can just show the warning message to the client and avoid throwing the full stacktrace.



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