[jira] [Commented] (CONNECTORS-970) Hadoop error and silent failure

["Karl Wright (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CONNECTORS-970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14070163#comment-14070163 ] 

Karl Wright commented on CONNECTORS-970:
----------------------------------------

Hi Minoru-san,

I'm mainly looking for guidance here.  If you can help me understand Hadoop's requirements then I can take the appropriate action.

Thanks!

> Hadoop error and silent failure
> -------------------------------
>
>                 Key: CONNECTORS-970
>                 URL: https://issues.apache.org/jira/browse/CONNECTORS-970
>             Project: ManifoldCF
>          Issue Type: Bug
>          Components: HDFS connector
>    Affects Versions: ManifoldCF 1.6.1
>            Reporter: Karl Wright
>            Assignee: Minoru Osuka
>             Fix For: ManifoldCF 1.7
>
>
> HDFS output connector, during its check() call, succeeds even though the following is dumped to StdErr:
> {code}
> [Thread-475] ERROR org.apache.hadoop.util.Shell - Failed to locate the winutils
> binary in the hadoop binary path
> java.io.IOException: Could not locate executable null\bin\winutils.exe in the Ha
> doop binaries.
>         at org.apache.hadoop.util.Shell.getQualifiedBinPath(Shell.java:278)
>         at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java:300)
>         at org.apache.hadoop.util.Shell.<clinit>(Shell.java:293)
>         at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:76)
>         at org.apache.hadoop.conf.Configuration.getTrimmedStrings(Configuration.
> java:1546)
>         at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:519)
>         at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:453)
>         at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFi
> leSystem.java:136)
>         at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2433
> )
>         at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:88)
>         at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:246
> 7)
>         at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2449)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:367)
>         at org.apache.hadoop.fs.FileSystem$1.run(FileSystem.java:156)
>         at org.apache.hadoop.fs.FileSystem$1.run(FileSystem.java:153)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:415)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInforma
> tion.java:1491)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:153)
>         at org.apache.manifoldcf.agents.output.hdfs.HDFSSession.<init>(HDFSSessi
> on.java:59)
>         at org.apache.manifoldcf.agents.output.hdfs.HDFSOutputConnector$GetSessi
> onThread.run(HDFSOutputConnector.java:822)
> {code}
> So there may be two problems here.  (1) If Hadoop has requirements beyond standard Java support for the environment, we need to know what those are and make sure they are written up.  And: (2) if the requirements are not met, the check() method should print an appropriate status, not succeed.



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