hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kai Sasaki (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-14418) Confusing failure stack trace when codec fallback is happend
Date Sat, 13 May 2017 08:28:04 GMT
Kai Sasaki created HADOOP-14418:
-----------------------------------

             Summary: Confusing failure stack trace when codec fallback is happend
                 Key: HADOOP-14418
                 URL: https://issues.apache.org/jira/browse/HADOOP-14418
             Project: Hadoop Common
          Issue Type: Sub-task
            Reporter: Kai Sasaki
            Assignee: Kai Sasaki
            Priority: Minor


When erasure codec is fallbacked, all stacktrace is shown to client.

{code}
root@990705591ccc:/usr/local/hadoop# bin/hadoop fs -put README.txt /ec
17/05/13 08:23:46 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your
platform... using builtin-java classes where applicable
17/05/13 08:23:47 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:173)
	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:1214)
	at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1193)
	at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1131)
	at org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:449)
	at org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:446)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:460)
	at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:387)
	at org.apache.hadoop.fs.FilterFileSystem.create(FilterFileSystem.java:181)
	at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1074)
	at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1054)
	at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:943)
	at org.apache.hadoop.fs.shell.CommandWithDestination$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)
	... 36 more
root@990705591ccc:/usr/local/hadoop#
{code}

It's confusing to users because it looks like writing ec file is failed. It is useful to print
only error message.

{code}
        LOG.warn("Failed to create raw erasure encoder " + rawCoderName +
            ", fallback to next codec if possible", e);
{code}



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org


Mime
View raw message