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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8364) Erasure coding: fix some minor bugs in EC CLI
Date Wed, 30 Sep 2015 16:02:31 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14937396#comment-14937396
] 

Hudson commented on HDFS-8364:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8548 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/8548/])
HDFS-8364. Erasure coding: fix some minor bugs in EC CLI (Contributed by (zhezhang: rev bba15e06d29d79ab1c379f258e5efb13a1ea39ae)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/erasurecode/ECCommand.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/resources/testErasureCodingConf.xml


> Erasure coding: fix some minor bugs in EC CLI
> ---------------------------------------------
>
>                 Key: HDFS-8364
>                 URL: https://issues.apache.org/jira/browse/HDFS-8364
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Walter Su
>            Assignee: Walter Su
>            Priority: Minor
>             Fix For: HDFS-7285
>
>         Attachments: HDFS-8364-HDFS-7285.001.patch, HDFS-8364-HDFS-7285.002.patch
>
>
> issue 1:  it's  not user-friendly. We should tell user that `hdfs erasurecode`  is the
entrance to EC commands(HDFS-7349)
> {noformat}
>  # bin/hdfs
> Usage: hdfs [--config confdir] [--daemon (start|stop|status)]
>            [--loglevel loglevel] COMMAND
>        where COMMAND is one of:
>   balancer             run a cluster balancing utility
>   cacheadmin           configure the HDFS cache
>   crypto               configure HDFS encryption zones
>   ...
>   zkfc                 run the ZK Failover Controller daemon
> {noformat}
> issue 2: it's not user-friendly
> {noformat}
>  # bin/hdfs erasurecode -getZoneInfo /
> -getZoneInfo: Fatal internal error
> java.lang.NullPointerException
>         at org.apache.hadoop.hdfs.tools.erasurecode.ECCommand$GetECZoneInfoCommand.processPath(ECCommand.java:168)
>         at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:321)
>         at org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:293)
>         at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:275)
>         at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:259)
>         at org.apache.hadoop.fs.shell.Command.processRawArguments(Command.java:205)
>         at org.apache.hadoop.fs.shell.Command.run(Command.java:166)
>         at org.apache.hadoop.fs.FsShell.run(FsShell.java:291)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
>         at org.apache.hadoop.hdfs.tools.erasurecode.ECCli.main(ECCli.java:45)
> {noformat}
> possible issue 3: We create zone twice at /
> {noformat}
>  # bin/hdfs erasurecode -createZone /
> EC Zone created successfully at hdfs://ds-34:9000/
>  # bin/hdfs erasurecode -createZone /
> createZone: Unable to create EC zone for the path hdfs://ds-34:9000/
> {noformat}
> It doesn't print detail error message.



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