Support Article

LKDEADLOCKTHR (Thread Deadlock) error

SA-37365

Summary



System Administrator notes long running threads, Thread Deadlock and subsequent thread dumps which cause JVMs to go in unresponsive state with Pega 7.1.9.

Error Messages



2LKDEADLOCKTHR Thread "WebContainer : 50" (0x0000000048BD2C00)
3LKDEADLOCKWTR is waiting for:
4LKDEADLOCKOBJ java/util/concurrent/locks/ReentrantLock$NonfairSync@0x000000068E43F450
3LKDEADLOCKOWN which is owned by:
2LKDEADLOCKTHR Thread "hz._hzInstance_1_c4b8b18696768c7c545809e25fa9382c.cached.thread-24" (0x000000004A81EB00)
3LKDEADLOCKWTR which is waiting for:
4LKDEADLOCKOBJ java/util/concurrent/locks/ReentrantLock$NonfairSync@0x000000068E4E8D70
3LKDEADLOCKOWN which is owned by:
2LKDEADLOCKTHR Thread "WebContainer : 50" (0x0000000048BD2C00)


Steps to Reproduce



Not Applicable


Root Cause



A defect in Pegasystems’ code had been previously identified in a different product release.

Resolution



Apply HFix-33710.

Published May 2, 2017 - Updated June 2, 2017

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