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Support Article

Elastic Search stores threads for long periods of time

SA-42129

Summary



Pega Elastic Search stores threads for long periods of time which causes application issues when searching for new cases. The overall thread pool operates at 90% capacity on Pega servers.


Error Messages



"WebContainer : 5" J9VMThread:0x0000000042FBB400, j9thread_t:0x000001002BD1C7A0, java/lang/Thread:0x000000064751A2C8, state:P, prio=5
(java/lang/Thread getId:0x486, isDaemon:true)
(native thread ID:0x7D40053, native priority:0x5, native policy:UNKNOWN, vmstate:P, vm thread flags:0x01020001)
CPU usage total: 1895.813914000 secs, user: 1850.702885000 secs, system: 45.111029000 secs
Parked on: com/pega/elasticsearch/common/util/concurrent/BaseFuture[email protected]0x000000065E9102E0 Owned by: <unknown>

"PegaRULES-Search[riverClusterService#updateTask][T#1]" J9VMThread:0x0000000042F9CD00, j9thread_t:0x0000010023EDCEA0, java/lang/Thread:0x0000000639E7BD50, state:P, prio=5
(java/lang/Thread getId:0x206, isDaemon:true)
(native thread ID:0x3FF00F5, native priority:0x5, native policy:UNKNOWN, vmstate:P, vm thread flags:0x01020001)
CPU usage total: 0.000985000 secs, user: 0.000259000 secs, system: 0.000726000 secs
Parked on: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x0000000639F0ED08 Owned by: <unknown>



Steps to Reproduce



Unknown


Root Cause



A defect or configuration issue in the operating environment
Low availability of file handles that process indexing requests affected all Hazelcast communication.



Resolution

Make the following change to the operating environment:

Set the ULIMIT to 65535 and refer to IBM Websphere ULIMIT recommendations for further explanations.



Suggest Edit

Published November 5, 2017 - Updated October 8, 2020

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