[jira] [Commented] (ACCUMULO-605) NPE on MasterMonitorInfo also spammy

["John Vines (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ACCUMULO-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13282607#comment-13282607 ] 

John Vines commented on ACCUMULO-605:
-------------------------------------

Might be a side affect from ACCUMULO-337
                
> NPE on MasterMonitorInfo also spammy
> ------------------------------------
>
>                 Key: ACCUMULO-605
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-605
>             Project: Accumulo
>          Issue Type: Bug
>          Components: monitor
>    Affects Versions: 1.5.0-SNAPSHOT
>            Reporter: John Vines
>            Assignee: John Vines
>
> Just like ACCUMULO-604, this message started occuring when the master went down. Got the following message-
> 23 11:06:33,862 [monitor.Monitor] WARN : 
> java.lang.NullPointerException
>         at org.apache.accumulo.server.monitor.Monitor.fetchData(Monitor.java:320)
>         at org.apache.accumulo.server.monitor.Monitor$2.run(Monitor.java:501)
>         at org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:34)
>         at java.lang.Thread.run(Thread.java:680)
> This message occurred very ~5 seconds or so, and we had instances of it occurring around 7k times as well. The frequency of this and ACCUMULO-604 makes me wonder if we have a weird threading issue, or something along those lines (however, when I jstacked the monitor I didn't see thousands of threads, so I'm doubtful).

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