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From "Walter Su (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8364) Erasure coding: fix some minor bugs in EC CLI
Date Tue, 12 May 2015 07:05:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Walter Su updated HDFS-8364:
----------------------------
    Description: 
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.

  was:
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:
{noformat}
 # bin/hdfs erasurecode -createZone /
createZone: Unable to create EC zone for the path hdfs://datasight-187:9000/
{noformat}
But we can create / zone by API.


> 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
>
> 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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