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https://issues.apache.org/jira/browse/HBASE-11643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108490#comment-14108490
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Anoop Sam John commented on HBASE-11643:
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Now we write only Put data into the MOB files. Delete markers are added to the
store files only. So when there is a need for MOB files compaction, we will
have to scan the entire table:cf
Can we write the delete markers also? So that later we can see whether we can
do normal way of compaction (Like the other CF compactions including read/write
files only) - This compaction will have special rules and policies in when to
run , selection of files etc.
If we don't write the delete markers now, it might be not possible to do that
in future because of existing MOB files in cluster (if there)
> Read and write MOB in HBase
> ---------------------------
>
> Key: HBASE-11643
> URL: https://issues.apache.org/jira/browse/HBASE-11643
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver, Scanners
> Reporter: Jingcheng Du
> Assignee: Jingcheng Du
> Attachments: HBASE-11643-V2.diff, HBASE-11643-V3.diff,
> HBASE-11643-V4.diff, HBASE-11643-V5.diff, HBASE-11643-V6.diff,
> HBASE-11643-V7.diff, HBASE-11643-V8.diff, HBASE-11643-V9.diff,
> HBase-11643.diff
>
>
> The read/write MOB in HBase are implemented in this JIRA. Normally, the Cells
> are saved in the MemStore, and flushed to the HFiles when necessary. For MOB,
> the Cells are saved in the MemStore as well, but they're flushed to elsewhere
> out of HBase in the format of HFiles.
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