[jira] [Created] (IGNITE-3513) Cleanup worker is placed in the Thread's waiting queue using Thread.sleep method

["Denis Magda (JIRA)" <ji...@apache.org>]

Denis Magda created IGNITE-3513:
-----------------------------------

             Summary: Cleanup worker is placed in the Thread's waiting queue using Thread.sleep method
                 Key: IGNITE-3513
                 URL: https://issues.apache.org/jira/browse/IGNITE-3513
             Project: Ignite
          Issue Type: Bug
    Affects Versions: 1.6
            Reporter: Denis Magda
            Assignee: Semen Boikov
             Fix For: 1.7


There is a bug in current implementation of {{GridCacheTtlManager#CleanupWorker}}.

Refer to the implementation's code snippet and the details below.

{code}
EntryWrapper first = pendingEntries.firstx();

 if (first != null) {
   long waitTime = first.expireTime - U.currentTimeMillis();

   if (waitTime > 0)
      U.sleep(waitTime);
 }
{code}

1. Put first item with TTL = 1 hour. CleanupWorker will go to sleep for 1 hour.

2. Put second item with TTL = 1 minute. Since 
CleanupWorker's thread sleeps now, second item will not be expired at the time.

NOTE: This scenario is easily to reproducible if first and second items are put into cache asynchronously. If try to put them in same thread one-by-one expiration may work fine.




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