Displaying #cassandra-dev/2017-02-23.log:

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Thu Feb 23 00:49:34 2017  zznate:folks, I just stumbled on CASSANDRA-2503 - what percentage of our user base do you think knows that we issue a mutation when we read more than minCompactionThreshold SSTables with an STCS-based table?
Thu Feb 23 00:49:34 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-2503 (Resolved; Fixed; 1.1.0): "Eagerly re-write data at read time ("superseding / defragmenting")"
Thu Feb 23 00:50:00 2017  zznate:in SinglePartitionReadCommand#queryMemtableAndSSTablesInTimestampOrder
Thu Feb 23 00:50:23 2017  zznate:i think this falls into the "seemed like a good idea at the time category"
Thu Feb 23 01:09:37 2017  zznate:created CASSANDRA-13258 for that (came across CASSANDRA-10342 which discusses this as well)
Thu Feb 23 01:09:38 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-13258 (Open; Unresolved; Unscheduled): "Rethink read-time defragmentation introduced in 1.0 (CASSANDRA-2503)"
Thu Feb 23 01:09:38 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-10342 (Resolved; Fixed; 2.1.14, 2.2.6, 3.0.5, 3.5): "Read defragmentation can cause unnecessary repairs"
Thu Feb 23 01:35:41 2017  iamaleksey_:zznate I think your ticket is a dupe, and there is one by our previous Chair somewhere that is basically the same
Thu Feb 23 01:37:19 2017  zznate:10342 was the only other mention i found
Thu Feb 23 01:38:20 2017  iamaleksey_:you could be right; either way, I recall deciding to run the benchmarks first and prove it's useless, otherwise preserve status quo
Thu Feb 23 01:38:26 2017  iamaleksey_:but nobody followed up with the work
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Thu Feb 23 21:23:27 2017  rustyrazorblade:i feel like adding a setting for it would make it easier to test in production systems.
Thu Feb 23 21:23:42 2017  rustyrazorblade:i'm referring to CASSANDRA-13258
Thu Feb 23 21:23:43 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-13258 (Open; Unresolved; Unscheduled): "Rethink read-time defragmentation introduced in 1.1 (CASSANDRA-2503)"
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