Alberto Gomez created GEODE-8455:
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Summary: Different behavior in transactions on partitioned regions
between creating the region with a parallel gateway sender vs altering the
region to add the parallel gateway sender
Key: GEODE-8455
URL: https://issues.apache.org/jira/browse/GEODE-8455
Project: Geode
Issue Type: Bug
Components: core
Reporter: Alberto Gomez
When creating a partitioned region and then altering it by adding a parallel
gateway sender, I have observed that, when sending transactions to the
partitioned region, an event (GatewaySenderEvent) for each transaction is sent
to every server hosting buckets for the partitioned region and not only to
that/those hosting the bucket where the data in the transaction belongs.
So, for example, in a partitioned region provided by two cache servers where
redundancy is zero, when a transaction is sent, the put is done on the server
hosting the bucket where the data in the transaction is to be stored but an
event for the put is sent to the two members. This provokes in the server not
hosting locally the bucket for the data in the event that the event
(GatewaySenderEven) is stored in the bucketToTempQueueMap member variable of
the ParallelGatewaySenderQueue.
Those events are eventually removed from that member as events are sent by the
gateway sender to the remote site. Nevertheless, if the remote site cannot be
reached, the events are kept in that member which could provoke a heap
exhaustion problem if there is a sufficient amount of incoming transactions and
the remote site cannot be reached for the required amount of time.
Events for a transaction should only be sent to the servers hosting the bucket
for the data in the transaction and not to all servers.
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