hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14921) Memory optimizations
Date Tue, 29 Mar 2016 14:49:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15216118#comment-15216118
] 

Anastasia Braginsky commented on HBASE-14921:
---------------------------------------------

bq. Are there methods from ConcurrentNM that we use from delegatee? Or are we just doing NM
methods? Wondering if we could change it so delegatee was just a NM.

I think that the main reason why delegatee is ConcurrentNM is that CSLM is ConcurrentNM. CSLM
is indeed concurrent.

bq. Would a large Cell break our nice 3 int addressing scheme or this very large cell chunk
will turn a few somersaults to make the stuff fit?

The last option. The addressing scheme remains 3 int, but very-large are special big chunks
allocated for special size.

> Memory optimizations
> --------------------
>
>                 Key: HBASE-14921
>                 URL: https://issues.apache.org/jira/browse/HBASE-14921
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: Eshcar Hillel
>            Assignee: Anastasia Braginsky
>         Attachments: CellBlocksSegmentInMemStore.pdf, CellBlocksSegmentinthecontextofMemStore(1).pdf,
HBASE-14921-V01.patch, HBASE-14921-V02.patch
>
>
> Memory optimizations including compressed format representation and offheap allocations



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message