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I have noticed a disturbing trend used in the defense of many NoSQL products --> When faced with criticism point out that there is version n+1 now available and

by ergo98 16y ago

I have noticed a disturbing trend used in the defense of many NoSQL products --> When faced with criticism point out that there is version n+1 now available and they should have used that, it would have fixed everything, etc. We've seen this, ironically, in reference to many MongoDB horror stories, so it's interesting that in this case it's the case where someone is moving to MongoDB.

akmiller 16y ago
To be fair, many of these products are in their infancy so yes in general the fix may be in version n+1. I don't think that's a defense of NoSQL products it's a common thing with any young product. Anyone who chooses an early product would hopefully understand that they will be experiencing issues and will be upgrading the product many times as issues are found and fixed.
jbellis 16y ago
Cassandra has a lot more installations pushing hard on it in 0.6 than it did in 0.5, many of whom have worked with me and other committers to resolve their issues, so it's not just paint-by-numbers handwaving on my part. Here are some of the changelog entries from 0.6.2 that are relevant to high-volume sites: - improve default JVM GC options (CASSANDRA-1014) - better defaults for flush sorter + writer executor queue sizes (CASSANDRA-1100) - added Collections.shuffle(splits) before returning the splits in ColumnFamilyInputFormat (CASSANDRA-1096) - StreamingService.StreamDestinations wouldn't empty itself after streaming finished (CASSANDRA-1076) - Add option to turn off Hinted Handoff (CASSANDRA-894) - split CommitLogExecutorService into BatchCommitLogExecutorService and PeriodicCommitLogExecutorService (CASSANDRA-1014) from 0.6.3: - add ability to lower compaction priority (CASSANDRA-1181) ... and 0.6.4: - extend option to lower compaction priority to hinted handoff as well (CASSANDRA-1260) - pre-emptively drop requests that cannot be processed within RPCTimeout (CASSANDRA-685) If that's so much greek to you, I'll be doing explanations of these over on the Riptano blog in the next few days, like the one I did for 0.6.1 here: http://riptano.com/blog/annotated-changelog-cassandra-061 http://riptano.com/blog/annotated-changelog-cassandra-061 (sorry for excessive spacing. how do you get HN to format bullets?)

by ergo98 16y ago

akmiller 16y ago

To be fair, many of these products are in their infancy so yes in general the fix may be in version n+1. I don't think that's a defense of NoSQL products it's a common thing with any young product. Anyone who chooses an early product would hopefully understand that they will be experiencing issues and will be upgrading the product many times as issues are found and fixed.

jbellis 16y ago

Cassandra has a lot more installations pushing hard on it in 0.6 than it did in 0.5, many of whom have worked with me and other committers to resolve their issues, so it's not just paint-by-numbers handwaving on my part. Here are some of the changelog entries from 0.6.2 that are relevant to high-volume sites: - improve default JVM GC options (CASSANDRA-1014) - better defaults for flush sorter + writer executor queue sizes (CASSANDRA-1100) - added Collections.shuffle(splits) before returning the splits in ColumnFamilyInputFormat (CASSANDRA-1096) - StreamingService.StreamDestinations wouldn't empty itself after streaming finished (CASSANDRA-1076) - Add option to turn off Hinted Handoff (CASSANDRA-894) - split CommitLogExecutorService into BatchCommitLogExecutorService and PeriodicCommitLogExecutorService (CASSANDRA-1014) from 0.6.3: - add ability to lower compaction priority (CASSANDRA-1181) ... and 0.6.4: - extend option to lower compaction priority to hinted handoff as well (CASSANDRA-1260) - pre-emptively drop requests that cannot be processed within RPCTimeout (CASSANDRA-685) If that's so much greek to you, I'll be doing explanations of these over on the Riptano blog in the next few days, like the one I did for 0.6.1 here: http://riptano.com/blog/annotated-changelog-cassandra-061 http://riptano.com/blog/annotated-changelog-cassandra-061 (sorry for excessive spacing. how do you get HN to format bullets?)