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Posted to issues@hbase.apache.org by "ramkrishna.s.vasudevan (JIRA)" <ji...@apache.org> on 2017/03/16 06:03:41 UTC

[jira] [Comment Edited] (HBASE-16438) Create a cell type so that chunk id is embedded in it

    [ https://issues.apache.org/jira/browse/HBASE-16438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15927545#comment-15927545 ] 

ramkrishna.s.vasudevan edited comment on HBASE-16438 at 3/16/17 6:03 AM:
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I think see the alloc() code. There again there is a CAS operation happening. So nextfReeOffset should be not be in UNINITIALIZED state as I said in the previous comment.
https://issues.apache.org/jira/browse/HBASE-16438?focusedCommentId=15927525&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15927525


was (Author: ram_krish):
I think see the alloc() code. There again there is a CAS operation happening. So nextfReeOffset should be not be in UNINITIALIZED state as I send in the previous comment.
https://issues.apache.org/jira/browse/HBASE-16438?focusedCommentId=15927525&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15927525

> Create a cell type so that chunk id is embedded in it
> -----------------------------------------------------
>
>                 Key: HBASE-16438
>                 URL: https://issues.apache.org/jira/browse/HBASE-16438
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: HBASE-16438_1.patch, HBASE-16438.patch, MemstoreChunkCell_memstoreChunkCreator_oldversion.patch, MemstoreChunkCell_trunk.patch
>
>
> For CellChunkMap we may need a cell such that the chunk out of which it was created, the id of the chunk be embedded in it so that when doing flattening we can use the chunk id as a meta data. More details will follow once the initial tasks are completed. 
> Why we need to embed the chunkid in the Cell is described by [~anastas] in this remark over in parent issue https://issues.apache.org/jira/browse/HBASE-14921?focusedCommentId=15244119&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15244119



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