Aleksey Yeschenko created CASSANDRA-9299:
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Summary: Fix counting of tombstones towards
TombstoneOverwhelmingException
Key: CASSANDRA-9299
URL: https://issues.apache.org/jira/browse/CASSANDRA-9299
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Aleksey Yeschenko
Fix For: 2.1.x, 2.0.x
CASSANDRA-6042 introduced warning on too many tombstones scanned, then
CASSANDRA-6117 introduced a hard TombstoneOverwhelmingException condition.
However, at least {{SliceQuerFilter.collectReducedColumn()}} seems to have the
logic wrong. Cells that are covered by a range tombstone or a partition high
level deletion, still count towards {{ColumnCounter}}'s {{ignored}} register.
Thus it's possible to have an otherwise healthy (though large) dropped
partition read cause an exception that shouldn't be there.
The only things that should count towards the exception are cell tombstones and
range tombstones (CASSANDRA-8527), but never ever live cells shadowed by any
kind of tombstone.
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