[jira] [Created] (IGNITE-13917) (err) Failed to dump debug information: java.lang.NullPointerException at dumpLongRunningOperations0(GridCachePartitionExchangeManager.java:2256)

["Sergey Uttsel (Jira)" <ji...@apache.org>]

Sergey Uttsel created IGNITE-13917:
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             Summary: (err) Failed to dump debug information: java.lang.NullPointerException at dumpLongRunningOperations0(GridCachePartitionExchangeManager.java:2256)
                 Key: IGNITE-13917
                 URL: https://issues.apache.org/jira/browse/IGNITE-13917
             Project: Ignite
          Issue Type: Improvement
            Reporter: Sergey Uttsel
            Assignee: Sergey Uttsel


Got the following exception:
{code:java}
[14:48:36] (err) Failed to dump debug information: java.lang.NullPointerExceptionjava.lang.NullPointerException
        at org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager.dumpLongRunningOperations0(GridCachePartitionExchangeManager.java:2256)
        at org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager.dumpLongRunningOperations(GridCachePartitionExchangeManager.java:2450)
        at org.apache.ignite.internal.processors.cache.transactions.IgniteTxManager.lambda$null$1(IgniteTxManager.java:2088)
        at org.apache.ignite.internal.util.IgniteUtils.wrapThreadLoader(IgniteUtils.java:7164)
        at org.apache.ignite.internal.processors.closure.GridClosureProcessor$1.body(GridClosureProcessor.java:826)
        at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:119)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
{code}
{{}}

As I see from the code, GridCacheSharedContext wasn't initialized during the dumpLongRunningOperations0 method.

{{}}
{code:java}
/** Context. */
protected GridCacheSharedContext<K, V> cctx;
{code}
{{}}

{{}}

I think there might be some kind of race here. We need to think about how to prevent this case.

*UPDATE*
This NullPointerException looks harmless and does not lead to cluster instability.



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