Dan Berindei created ISPN-9028:
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Summary: Write-only segments should be invalidated during the READ_NEW phase
Key: ISPN-9028
URL:
https://issues.jboss.org/browse/ISPN-9028
Project: Infinispan
Issue Type: Bug
Components: Core
Affects Versions: 9.2.1.Final
Reporter: Dan Berindei
Fix For: 9.3.0.Alpha1
When a rebalance removes a segment X from node A, node A keeps updating entries in segment
X until the rebalance finishes, and only deletes the entries of segment X after entering
the NO_REBALANCE phase.
This is problematic for tests that work with the data container directly, because
{{waitForNoRebalance()}} doesn't wait for the removal of stale entries. The test will
work without an explicit wait most of the time, so this is a recipe for random test
failures (e.g. ISPN-8728).
As described in ISPN-5021, we can prevent any writes to segment X at the start of the
READ_NEW_WRITE_ALL phase, send the phase confirmation to the coordinator, and then remove
the entries asynchronously. We just need to keep track of the removal task and only
install/confirm the NO_REBALANCE phase once all the entries that we don't own have
been removed.
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