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https://issues.apache.org/jira/browse/HBASE-16703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15522125#comment-15522125
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ramkrishna.s.vasudevan edited comment on HBASE-16703 at 9/26/16 5:43 AM:
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[~apurtell]
I was working on this area long time back regarding the byte[] that was getting
recreated if the size grows above INITIAL_BUFFER_SIZE. But that was to see if
we can avoid the recreation. But I think we can atleast avoid the allocation
pressure of the buffer because per SeekerState we are going to keep filling
this fixed byte array as per the cell that is retrieved.
Let me know if I can take this up as this is unassigned. If you are planning to
work on it, pls feel free to do so.
was (Author: ram_krish):
[~apurtell]
I was working on this area long time back regarding the byte[] that was getting
recreated if the size grows above INITIAL_BUFFER_SIZE. But that was to see if
we can avoid the recreation. But I think we can atleast avoid the recreation of
the buffer because per SeekerState we are going to keep filling this fixed byte
array as per the cell that is retrieved.
Let me know if I can take this up as this is unassigned. If you are planning to
work on it, pls feel free to do so.
> Explore object pooling of SeekerState
> -------------------------------------
>
> Key: HBASE-16703
> URL: https://issues.apache.org/jira/browse/HBASE-16703
> Project: HBase
> Issue Type: Task
> Reporter: Andrew Purtell
>
> In read workloads 35% of the allocation pressure produced by servicing RPC
> requests, when block encoding is enabled, comes from
> BufferedDataBlockEncoder$SeekerState.<init>, where we allocate two byte
> arrays of INITIAL_KEY_BUFFER_SIZE in length. There's an opportunity for
> object pooling of SeekerState here. Subsequent code checks if those byte
> arrays are sized sufficiently to handle incoming data to copy. The arrays
> will be resized if needed.
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