[jira] [Commented] (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13632620#comment-13632620 ] Anoop Sam John commented on HBASE-74: - I remember this is done in Trunk as part of some other issue. Not remembering the issue id. [~yuzhih...@gmail.com] you know? May be we can close this issue as duplicate now? [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Affects Versions: 0.95.2 Reporter: Jim Kellerman When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13503958#comment-13503958 ] Sergey Shelukhin commented on HBASE-74: --- Set. Thanks! [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Affects Versions: 0.96.0 Reporter: Jim Kellerman Fix For: 0.96.0 When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13503460#comment-13503460 ] Otis Gospodnetic commented on HBASE-74: --- @stack [~sershe] - thanks. I linked HBASE-5416, but thought it would also be good to set Fix Version to 0.96 so this issue gets some visibility - seems popular in terms of votes and watchers and that HBASE-5416 is also set for 0.96. However, I don't seem to have enough HBase JIRA karma for this, so if you think setting Fix Version would make sense, could you please do it? [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Reporter: Jim Kellerman When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13502381#comment-13502381 ] Sergey Shelukhin commented on HBASE-74: --- If not, HBASE-5416 is in the same area/might be related [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Reporter: Jim Kellerman When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13502398#comment-13502398 ] stack commented on HBASE-74: To my knowledge, this issue has yet to be tackled. [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Reporter: Jim Kellerman When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13501677#comment-13501677 ] Otis Gospodnetic commented on HBASE-74: --- Let's dig out this 5+ years old issue with last comment from 4.5+ years ago :) Maybe this was actually implemented by now? [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Reporter: Jim Kellerman When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Commented: (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12991485#comment-12991485 ] stack commented on HBASE-74: @Lars Don't we do for (family: families) get/scan business now? I was thinking if families 1, then we'd run the get/scan business each in its own thread. When all threads were done we'd have to aggregate the result before return? [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Reporter: Jim Kellerman Priority: Critical Fix For: 0.92.0 When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Commented: (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
[ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12991488#comment-12991488 ] Jonathan Gray commented on HBASE-74: You could potentially load the first block in each file in parallel. With any kind of concurrency on the server, it's unclear to me that this would be a win though. Families in parallel seems reasonable as a configurable option, but again, under concurrency this parallelism will have diminishing returns. [performance] When a get or scan request spans multiple columns, execute the reads in parallel -- Key: HBASE-74 URL: https://issues.apache.org/jira/browse/HBASE-74 Project: HBase Issue Type: Improvement Components: regionserver Reporter: Jim Kellerman Priority: Critical Fix For: 0.92.0 When a get or scan request spans multiple columns, execute the reads in parallel and use a CountDownLatch to wait for them to complete before returning the results. -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Commented: (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
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https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12991290#comment-12991290
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Lars George commented on HBASE-74:
--
Stack,
{quote}
HStore : Every read from memCache + storefiles can be done in parallel.
{quote}
How is that going to work with the ScanQueryMatcher? I mean, the initial seek()
I can understand, but then you have to scan the stores by age starting with the
MemStore, moving to the on-disk Stores. How can we parallelize that? Just
curious.
[performance] When a get or scan request spans multiple columns, execute the
reads in parallel
--
Key: HBASE-74
URL: https://issues.apache.org/jira/browse/HBASE-74
Project: HBase
Issue Type: Improvement
Components: regionserver
Reporter: Jim Kellerman
Priority: Critical
Fix For: 0.92.0
When a get or scan request spans multiple columns, execute the reads in
parallel and use a CountDownLatch to wait for them to complete before
returning the results.
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