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authorKevin McKiou <km097d@att.com>2017-12-13 15:11:08 -0600
committerKevin McKiou <km097d@att.com>2017-12-15 12:32:26 -0600
commiteffbd1d07e7192e7cf8eb42316f5ce0cfb09dd0b (patch)
tree9ff6a8d24b81b752f7baa16f905211477bd87173 /LICENSE.txt
parent39672906602cbd5b734b8c9889234653e4beaf26 (diff)
Fix issues blocking election handler thread
Patch 1: This bug tracks the AT&T bug 355533. The symptom was that drools pdps that were backing each other up were becoming stuck in a standby state. The cause was that the election handler thread was being hung by a call to PolicyEngine.manager.deactivate which shuts down the topic endpoints when the drools pdp operational state transitions to disabled. Related problems were that the election handler heartbeat was NOT blocked when the main thread was blocked and the IntegrityMonitor forward progress counter was NOT blocked from incrementing when the election handler thread was blocked. This prevented the correct failover of the drools pdp to another healthy one. This change fixes the two causes of the thread blockage, moves the election handler heartbeat to the main thread and adds an interface (AllSeemsWell) which is called when the election handler has stalled/resumed. The AllSeemsWell interface will block forward progress counter increments when ALLNOTWELL and will resume forward progress counter increments when ALLSEEMSWELL. In addition, it reduces the run time of the StandbyStateManagementTest from approximately 8 minutes to approximately 2 minutes. Since this changes classes also changed by POLICY-444, this change must be merged before POLICY-444 can be merged. Patch 2: Extended sleep times in AllSeemsWellTest. Patch 3: Commented out asserts that are keeping it from building. Note: It builds just fine in local environment. Patch 4: Moved the check of allNotWellMap from testTransaction to endTransaction so it will cover calls to endTransaction from application code rather than just calls from testTransaction. Patch 5: Fixed potential Sonar issue in initialization of HashMaps allSeemsWellMap and allNotWellMap Patch 6: Changes to IntegrityMonitorTest to make it run faster and more deterministically. This satisfies POLICY-444. Issue-ID: POLICY-501 Change-Id: I8fbbdc481839ec6066f26392d30e230d6b1293f2 Signed-off-by: Kevin McKiou <km097d@att.com>
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