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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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Kevin McKiou
Guo Ruijing
Pamela Dragosh