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https://issues.apache.org/jira/browse/CASSANDRA-9079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14544600#comment-14544600
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Lyuben Todorov commented on CASSANDRA-9079:
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[~thobbs]'s point about too many config options in cassandra.yaml seems to be a
common pain point in a lot of patches. Perhaps an acceptable approach would be
to allow {{respectTombstoneThresholds}} to be configurable via JMX and the
nodetool?
> "respectTombstoneThresholds" should be configurable
> ----------------------------------------------------
>
> Key: CASSANDRA-9079
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9079
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Vinay Chella
> Labels: tombstone
> Attachments: 9079.txt
>
>
> Currently there is no way to control/ configure the functionality of "drop
> queries exceeding a configurable number of tombstones". Making this
> functionality configurable through yaml helps use case like:
> We have several production clusters with large number of tombstones due to
> aggressive TTLs with very small payloads, and low gc_grace_seconds. Most of
> the read queries on these column families are ending up in drop operations or
> excessive warn messages due to "tombstone_failure_threshold" and
> "tombstone_warn_threshold". One cannot deterministically disable these
> tombstone thresholds by setting high values. Hence, making
> "SliceQueryFilter.respectTombstoneThresholds()" configurable through yaml
> would be the better approach.
> Column families with small payloads (couple hundred bytes) having large
> number of tombstones would not lead to "Avoid death-by-tombstone by default
> (CASSANDRA-6117)", which is the reason for observed drop operations. We see
> drop operations before compactions catch up, and clean those tombstones with
> both STCS and LCS. Configurable "respectTombstoneThresholds()" will help in
> reducing tombstone warnings noise.
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