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https://issues.apache.org/jira/browse/HDFS-8364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14937899#comment-14937899
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Hudson commented on HDFS-8364:
------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #473 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/473/])
HDFS-8364. Erasure coding: fix some minor bugs in EC CLI (Contributed by
(zhezhang: rev bba15e06d29d79ab1c379f258e5efb13a1ea39ae)
*
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
* hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
> 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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