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https://issues.apache.org/jira/browse/HADOOP-11242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14526400#comment-14526400
 ] 

Tsuyoshi Ozawa commented on HADOOP-11242:
-----------------------------------------

[~iwasakims] thanks for your contribution. Could you check the test failure of 
hadoop.tracing.TestTracing?

{code}
java.lang.NullPointerException: null
        at 
org.apache.hadoop.tracing.TestTracing.readWithTracing(TestTracing.java:153)
        at 
org.apache.hadoop.tracing.TestTracing.testTracing(TestTracing.java:68)
{code}


> Record the time of calling in tracing span of IPC server
> --------------------------------------------------------
>
>                 Key: HADOOP-11242
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11242
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>            Reporter: Masatake Iwasaki
>            Assignee: Masatake Iwasaki
>            Priority: Minor
>         Attachments: HADOOP-11242.1.patch, HADOOP-11242.1.patch
>
>
> Current tracing span starts when the Call is put into callQueue. Recording 
> the time of calling is useful to debug.



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