[
https://issues.apache.org/jira/browse/HBASE-12295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ramkrishna.s.vasudevan updated HBASE-12295:
-------------------------------------------
Attachment: HBASE-12295_9.patch
Updated patch - Rebased based on the latest trunk.
Purely consists of only ref couting related code.
The blocktype has only one type ie. MemoryType (SHARED_MEM and NON_SHARED_MEM).
Any cell coming block formed from the ByteBufferIOEngine of the bucket cache is
marked as SHARED_MEM - helps to do the copy of the cells in case of CP wrapping
the region scanner.
All other blocks are marked as NON_SHARED_MEM.
> Prevent block eviction under us if reads are in progress from the BBs
> ---------------------------------------------------------------------
>
> Key: HBASE-12295
> URL: https://issues.apache.org/jira/browse/HBASE-12295
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver, Scanners
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0
>
> Attachments: HBASE-12295.pdf, HBASE-12295_1.patch, HBASE-12295_1.pdf,
> HBASE-12295_2.patch, HBASE-12295_4.patch, HBASE-12295_4.pdf,
> HBASE-12295_5.pdf, HBASE-12295_9.patch, HBASE-12295_trunk.patch
>
>
> While we try to serve the reads from the BBs directly from the block cache,
> we need to ensure that the blocks does not get evicted under us while
> reading. This JIRA is to discuss and implement a strategy for the same.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
