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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.
Issue-ID: POLICY-501
Change-Id: I7b8180d11077ccf59b21b6484cb58b5522a3df8f
Signed-off-by: Kevin McKiou <km097d@att.com>
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Under stress, the election handler in feature-active-standby-management
may not get a chance to run within the allowed window causing the
"watcher" thread to kill it and restart it. The run window is
expanded. Also the pdp.updateInterval and pdp.checkInterval
parameter values are increased appropriately in the properties file.
Issue-ID: POLICY-484
Change-Id: I0c1c2d4fdfbc408be929c56e451b92fc7ad4464a
Signed-off-by: Kevin McKiou <km097d@att.com>
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Removed unused import
Null pointer exception
Does not evaluate to true
override hashCode
log exception
cast long
public static final
Issue-ID: POLICY-261
Change-Id: I2d90f8503fcc5ed7d13aff31143b8fb69c689e18
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
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Patch 1: Adds the active-standby feature to drools-pdp.
This feature provides the state control of the
drools-pdp nodes controlling failover with a site
and across sites. Patch 2: Resolve merge conflict in
packages/install/pom.xml and pom.xml. Patch 3: Resolved
comments from Pamela Dragosh and Jorge Hernandez.
Issue-ID: POLICY-156
Change-Id: I922b3d5d8a464006e9675924bcbc7409d68c08d5
Signed-off-by: Kevin McKiou <km097d@att.com>
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