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https://issues.apache.org/jira/browse/HBASE-21874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16906023#comment-16906023
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Wellington Chevreuil edited comment on HBASE-21874 at 8/13/19 9:59 AM:
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I know it's a new feature, but we have interest on include this on our
distribution which is based on branch-2.2. Am reopening this in order to
backport it to to branch-2.2. I had submitted a patch with this change to
branch-2.2. If the pre-commit checks for this branch-2.2 patch are ok, would
anyone oppose having this backported to branch-2.2?
was (Author: wchevreuil):
Am reopening this in order to backport it to to branch-2.2 and branch-2.1. I'll
submit patches for both branches and if build is ok, will be pushing it on the
relative branches.
> Bucket cache on Persistent memory
> ---------------------------------
>
> Key: HBASE-21874
> URL: https://issues.apache.org/jira/browse/HBASE-21874
> Project: HBase
> Issue Type: New Feature
> Components: BucketCache
> Affects Versions: 3.0.0
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Priority: Major
> Fix For: 3.0.0, 2.3.0
>
> Attachments: HBASE-21874.branch-2.2.001.patch, HBASE-21874.patch,
> HBASE-21874.patch, HBASE-21874_V2.patch, HBASE-21874_V4.patch,
> HBASE-21874_V5.patch, HBASE-21874_V6.patch, Pmem_BC.png
>
>
> Non volatile persistent memory devices are byte addressable like DRAM (for
> eg. Intel DCPMM). Bucket cache implementation can take advantage of this new
> memory type and can make use of the existing offheap data structures to serve
> data directly from this memory area without having to bring the data to
> onheap.
> The patch is a new IOEngine implementation that works with the persistent
> memory.
> Note : Here we don't make use of the persistence nature of the device and
> just make use of the big memory it provides.
> Performance numbers to follow.
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