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https://issues.apache.org/jira/browse/CASSANDRA-20670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuqi Yan updated CASSANDRA-20670:
---------------------------------
Source Control Link: https://github.com/apache/cassandra/pull/4176
Test and Documentation Plan: Added UT to reproduce (was:
https://github.com/apache/cassandra/pull/4176)
> IntrusiveStack.accumulate is not accumulating correctly
> -------------------------------------------------------
>
> Key: CASSANDRA-20670
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20670
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Legacy/Core
> Reporter: Yuqi Yan
> Assignee: Yuqi Yan
> Priority: Normal
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {code:java}
> protected static <T extends IntrusiveStack<T>> long accumulate(T list,
> LongAccumulator<T> accumulator, long initialValue)
> {
> long value = initialValue;
> while (list != null)
> {
> value = accumulator.apply(list, initialValue);
> ^^^
> list = list.next;
> }
> return value;
> } {code}
> Seems we're restarting from the beginning every time when accumulating. This
> is used in Paxos V2 when aggregating the responses from peers.
> Added a simple unit test around FailureRecordingCallback to reproduce this
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