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From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16608) Introducing the ability to merge ImmutableSegments without copy-compaction or SQM usage
Date Thu, 22 Sep 2016 08:43:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15512637#comment-15512637
] 

Anastasia Braginsky commented on HBASE-16608:
---------------------------------------------

Hey [~anoop.hbase],

Thank for the review! I have answered all your comments. Just the issue with the MemStoreCompactorIterator
working without iterator I will resolve little later.
Regarding that you are not getting notifications about my activity on Review Board, I do not
know what to do with that... 
I have registered to the hbase group, now getting lots of emails about each action on the
Review Board, but you say it doesn't help... 
Any ideas what should I do?

bq. So as per this patch, we will do flatten for the very first pipeline segment only. After
that it is either Merge or Compact.. Later we will find a better value for this (max segments
possible to keep in a pipeline). Am ok for this way.

I think you understand it right. To be little more precise, flatten (on its own) almost doesn't
happen at all (only on tests). 
Upon being pushed to pipeline (still with CSLM) the new immutable segment is directly either
merged or compiled with the old immutable segment. 
But indeed, later we will find a better value for this (max segments possible to keep in a
pipeline).

Thanks,
Anastasia

> Introducing the ability to merge ImmutableSegments without copy-compaction or SQM usage
> ---------------------------------------------------------------------------------------
>
>                 Key: HBASE-16608
>                 URL: https://issues.apache.org/jira/browse/HBASE-16608
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Assignee: Anastasia Braginsky
>         Attachments: HBASE-16417-V02.patch, HBASE-16417-V04.patch, HBASE-16417-V06.patch,
HBASE-16417-V07.patch
>
>




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