John Vines created ACCUMULO-605:
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Summary: 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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