lizg created CASSANDRA-13496:
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Summary: table with lots of column ( tens of thousands columns),
system is very slow
Key: CASSANDRA-13496
URL: https://issues.apache.org/jira/browse/CASSANDRA-13496
Project: Cassandra
Issue Type: Bug
Components: CQL
Environment: linux redhat 6.5 cassandra 3.10 using 2i
cpu : 4 core , memory: 16G . 5 servers
using gocql client
Reporter: lizg
Priority: Minor
Attachments: debug.log, sql.txt
In debug.log there are lots of
DEBUG [COMMIT-LOG-ALLOCATOR] 2017-05-04 08:54:35,769
AbstractCommitLogSegmentManager.java:107 - No segments in reserve; creating a
fresh one
DEBUG [MemtablePostFlush:54] 2017-05-04 08:49:19,699
AbstractCommitLogSegmentManager.java:329 - Segment
CommitLogSegment(/home/matrix/cassandra/commitlog/CommitLog-6-1493809341337.log)
is no longer active and will be deleted now
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