Thomas Steinmaurer created CASSANDRA-16201:
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Summary: Cassandra 4.0 b2 - OOM / memory pressure due to object
array pre-allocations in BatchUpdatesCollector
Key: CASSANDRA-16201
URL: https://issues.apache.org/jira/browse/CASSANDRA-16201
Project: Cassandra
Issue Type: Bug
Reporter: Thomas Steinmaurer
In a Cas 2.1 / 3.0 / 3.11 / 4.0b2 comparison test with the same load profile,
we see 4.0b2 going OOM from time to time. According to a heap dump, likely
related to object array pre-allocations at the size of
{{BatchUpdatesCollector.updatedRows}} per {{BTree}} although there is always
only 1 {{BTreeRow}} in the {{BTree}}.
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