Aleksey Yeschenko created CASSANDRA-14680:
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Summary: Built-in 2i implementation applies updates
non-deterministically
Key: CASSANDRA-14680
URL: https://issues.apache.org/jira/browse/CASSANDRA-14680
Project: Cassandra
Issue Type: Bug
Reporter: Chris Lohfink
Fix For: 3.0.x, 3.11.x, 4.0.x
Spotted by [~cnlwsu] during CASSANDRA-14664 review, and confirmed by me and
[~beobal] separately.
{{Keyspace.applyInternal()}} generates {{nowInSeconds}} from local time at the
time of mutation application - which can happen at quite a delay from that
mutation creation (think streaming path, hints, batchlog replay). That
{{nowInSeconds}} value is later used by {{CassandraIndex}} {{Indexer}} to
determine liveness of cells and also used for some of generated tombstones.
Depending on when {{Keyspace.applyInternal()}} call happens, you'll see varying
results in the internal 2i table, which sounds problematic. The values should
be derived from the cells and liveness info in the partition updates
exclusively.
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