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Posted to commits@cassandra.apache.org by "Paulo Motta (Jira)" <ji...@apache.org> on 2021/08/10 12:47:00 UTC
[jira] [Created] (CASSANDRA-16839) Truncation snapshots
unnecessarily generated on node startup
Paulo Motta created CASSANDRA-16839:
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Summary: Truncation snapshots unnecessarily generated on node startup
Key: CASSANDRA-16839
URL: https://issues.apache.org/jira/browse/CASSANDRA-16839
Project: Cassandra
Issue Type: Bug
Components: Tool/nodetool
Reporter: Paulo Motta
When testing cassandra 4.0 on ccm I noticed that everytime I restart a node, truncation snapshots are created for the tables {{system.table_estimates}} and {{system.size_estimates}}:
{noformat}
$ ccm create -n 1 test -s
$ ccm node1 stop
$ ccm node1 start
$ ccm node1 stop
$ ccm node1 start
$ ccm node1 nodetool listsnapshots
Snapshot Details:
Snapshot name Keyspace name Column family name True size Size on disk
truncated-1628599001857-table_estimates system table_estimates 0 bytes 13 bytes
truncated-1628599099560-table_estimates system table_estimates 0 bytes 13 bytes
truncated-1628599001736-size_estimates system size_estimates 0 bytes 13 bytes
truncated-1628599057438-table_estimates system table_estimates 6.16 KiB 6.19 KiB
truncated-1628599099458-size_estimates system size_estimates 0 bytes 13 bytes
truncated-1628599057340-size_estimates system size_estimates 5.73 KiB 5.76 KiB
Total TrueDiskSpaceUsed: 0 bytes
{noformat}
Not sure if this is expected behavior, but feels like a bug to me.
Reproduced on 4.0, not sure if it reproduces on lower versions.
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