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From "Nandakumar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12268) Ozone: Add metrics for pending storage container requests
Date Fri, 15 Sep 2017 15:18:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168010#comment-16168010
] 

Nandakumar commented on HDFS-12268:
-----------------------------------

[~vagarychen] & [~linyiqun]
After this patch witting data into ozone fails. (thanks [~anu] for finding this)

We get the below exception while trying to write
{code}
Exceptionin thread "main" java.lang.NoClassDefFoundError: com/sun/tools/javac/util/Pair
         at org.apache.hadoop.scm.XceiverClientHandler.sendCommandAsync(XceiverClientHandler.java:149)
         at org.apache.hadoop.scm.XceiverClientHandler.sendCommand(XceiverClientHandler.java:127)
         at org.apache.hadoop.scm.XceiverClient.sendCommand(XceiverClient.java:132)
         at org.apache.hadoop.scm.storage.ContainerProtocolCalls.createContainer(ContainerProtocolCalls.java:251)
         at org.apache.hadoop.ozone.client.io.ChunkGroupOutputStream.getFromKsmKeyInfo(ChunkGroupOutputStream.java:294)
         at org.apache.hadoop.ozone.client.rpc.OzoneRpcClient.createKey(OzoneRpcClient.java:487)
         at TestDriver.main(TestDriver.java:33)
  Causedby: java.lang.ClassNotFoundException: com.sun.tools.javac.util.Pair
         at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
         ... 7 more
{code}

{{com.sun.tools.javac.util.Pair}} is found in tools.jar, which is not part of JRE.

> Ozone: Add metrics for pending storage container requests
> ---------------------------------------------------------
>
>                 Key: HDFS-12268
>                 URL: https://issues.apache.org/jira/browse/HDFS-12268
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>              Labels: ozoneMerge
>         Attachments: HDFS-12268-HDFS-7240.001.patch, HDFS-12268-HDFS-7240.002.patch,
HDFS-12268-HDFS-7240.003.patch, HDFS-12268-HDFS-7240.004.patch, HDFS-12268-HDFS-7240.005.patch,
HDFS-12268-HDFS-7240.006.patch, HDFS-12268-HDFS-7240.007.patch
>
>
>  As storage container async interface has been supported after HDFS-11580, we need to
keep an eye on the queue depth of pending container requests. It can help us better found
if there are some performance problems.



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