sunhaihong created CASSANDRA-15669:
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Summary: LeveledCompactionStrategy compact last level throw an
ArrayIndexOutOfBoundsException
Key: CASSANDRA-15669
URL: https://issues.apache.org/jira/browse/CASSANDRA-15669
Project: Cassandra
Issue Type: Bug
Reporter: sunhaihong
Assignee: sunhaihong
Attachments: cfs_compaction_info.png, error_info.png
cassandra will throw an ArrayIndexOutOfBoundsException when compact last level.
My test is as follows：
# Create a table with LeveledCompactionStrategy and its params are 'enabled':
'true', 'fanout_size': '2', 'max_threshold': '32', 'min_threshold': '4',
'sstable_size_in_mb': '2'（fanout_size and sstable_size_in_mb are too small just
to make it easier to reproduce the problem）;
# Insert data into the table by stress;
# Cassandra throw an ArrayIndexOutOfBoundsException when compact level9
sstables(this level score bigger than 1.001)
I tested it on cassandra version 3.11.3 & 4.0-alpha3. The exception all
happened.
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