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https://issues.apache.org/jira/browse/CASSANDRA-15575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
David Capwell updated CASSANDRA-15575:
--------------------------------------
Reviewers: David Capwell, David Capwell (was: David Capwell)
David Capwell, David Capwell
Status: Review In Progress (was: Patch Available)
{code}
/**
* Returns the thread info for each thread
* whose ID is in the input array <tt>ids</tt> with no stack trace.
* This method is equivalent to calling:
* <blockquote><pre>
* {@link #getThreadInfo(long[], int) getThreadInfo}(ids, 0);
* </pre></blockquote>
*
* <p>
* This method returns an array of the <tt>ThreadInfo</tt> objects.
* The stack trace, locked monitors, and locked synchronizers
* in each <tt>ThreadInfo</tt> object will be empty.
*
* If a thread of a given ID is not alive or does not exist,
* the corresponding element in the returned array will
* contain <tt>null</tt>. A thread is alive if
* it has been started and has not yet died.
*
* <p>
* <b>MBeanServer access</b>:<br>
* The mapped type of <tt>ThreadInfo</tt> is
* <tt>CompositeData</tt> with attributes as specified in the
* {@link ThreadInfo#from ThreadInfo.from} method.
*
* @param ids an array of thread IDs.
* @return an array of the {@link ThreadInfo} objects, each containing
* information about a thread whose ID is in the corresponding
* element of the input array of IDs
* with no stack trace, no locked monitor and no synchronizer info.
*
* @throws IllegalArgumentException if any element in the input array
* <tt>ids</tt> is {@code <= 0}.
* @throws java.lang.SecurityException if a security manager
* exists and the caller does not have
* ManagementPermission("monitor").
*/
public ThreadInfo[] getThreadInfo(long[] ids);
{code}
The documented behavior is null means not found, so the filter LGTM
+1
> Fix flaky test
> org.apache.cassandra.tools.StandaloneVerifierTest.testStandaloneVerifier_WithArgs
> ------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-15575
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15575
> Project: Cassandra
> Issue Type: Bug
> Components: Test/unit, Tool/sstable
> Reporter: David Capwell
> Assignee: Brandon Williams
> Priority: Normal
> Fix For: 4.0-alpha
>
>
> Failure was seen on java 8.
> {code}
> java.lang.NullPointerException
> at
> java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
> at
> java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
> at
> java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at
> java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
> at
> org.apache.cassandra.tools.ToolsTester.assertNoUnexpectedThreadsStarted(ToolsTester.java:86)
> at
> org.apache.cassandra.tools.StandaloneVerifierTest.testStandaloneVerifier_WithArgs(StandaloneVerifierTest.java:45)
> {code}
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