Denis Magda created IGNITE-8171:
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Summary: Document how to rollback transactions to let PME complete
Key: IGNITE-8171
URL: https://issues.apache.org/jira/browse/IGNITE-8171
Project: Ignite
Issue Type: New Feature
Components: documentation
Reporter: Denis Magda
Fix For: 2.5
Some Ignite operations provoke partition map exchange process within Ignite to
ensure the partitions distribution state is synchronized cluster-wide. Topology
update events and a start of a new distributed cache are examples of those
operations.
When the partition map exchange starts, Ignite acquires a global lock at a
particular stage. The lock can't be obtained until pending transactions are
running in parallel. If there is a transaction that runs for a while, then it
will prevent the partition map exchange process from the start freezing some
operations such as a new node join process.
This property allows to rollback such long transactions to let Ignite acquire
the lock faster and initiate the partition map exchange process. The timeout is
enforced only at the time of the partition map exchange process.
See {{TransactionConfiguraion}} and
{{IgniteTransactions.localActiveTransactions and withLabel}} methods.
Original ticket:
https://issues.apache.org/jira/browse/IGNITE-6827
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