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https://issues.apache.org/jira/browse/HDFS-12164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16095634#comment-16095634
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Wei-Chiu Chuang commented on HDFS-12164:
----------------------------------------

Thanks for reporting this.

This seems to be a dup of HDFS-12094?

> CodecUtil throws stacktrace to the client in createRawEncoder/Decoder warn msg
> ------------------------------------------------------------------------------
>
>                 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
>         Attachments: HDFS-12164.001.patch
>
>
> 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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