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https://issues.apache.org/jira/browse/HBASE-22531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zheng Hu updated HBASE-22531:
-----------------------------
Description:
I'm having a benchmark with block cache disabled for HBASE-21879 branch. Just
caurious about why still so many heap allocation in the heap allocation flame
graph [async-prof-pid-13311-alloc-4.svg |
https://issues.apache.org/jira/secure/attachment/12970648/async-prof-pid-13311-alloc-4.svg],
actually, I've set the following config, which means should all allocation
will be offheap, while it's not:
{code}
# Disable the block cache
hfile.block.cache.size=0
hbase.ipc.server.reservoir.minimal.allocating.size=0 # Let all allocation
from pooled allocator.
{code}
was:I'm having a benchmark with block cache disabled for HBASE-21879 branch.
Just caurious about why still so many heap allocation in the heap allocation
flame graph [ | ]
> The HFileReaderImpl#shouldUseHeap return the incorrect true when disabled
> BlockCache
> -------------------------------------------------------------------------------------
>
> Key: HBASE-22531
> URL: https://issues.apache.org/jira/browse/HBASE-22531
> Project: HBase
> Issue Type: Sub-task
> Reporter: Zheng Hu
> Assignee: Zheng Hu
> Priority: Major
> Attachments: async-prof-pid-13311-alloc-4.svg
>
>
> I'm having a benchmark with block cache disabled for HBASE-21879 branch.
> Just caurious about why still so many heap allocation in the heap allocation
> flame graph [async-prof-pid-13311-alloc-4.svg |
> https://issues.apache.org/jira/secure/attachment/12970648/async-prof-pid-13311-alloc-4.svg],
> actually, I've set the following config, which means should all allocation
> will be offheap, while it's not:
> {code}
> # Disable the block cache
> hfile.block.cache.size=0
> hbase.ipc.server.reservoir.minimal.allocating.size=0 # Let all allocation
> from pooled allocator.
> {code}
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