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https://issues.apache.org/jira/browse/HADOOP-18105?focusedWorklogId=774786&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-774786
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ASF GitHub Bot logged work on HADOOP-18105:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 25/May/22 19:37
Start Date: 25/May/22 19:37
Worklog Time Spent: 10m
Work Description: mukund-thakur commented on PR #4263:
URL: https://github.com/apache/hadoop/pull/4263#issuecomment-1137774197
> deciding how to handle an unknown buffer being returned is the key one
What do you mean by this? I don't think there is a way to know whether the
buffer being returned currently through putBuffer() was part of this pool or
not.
Right now the puBuffer() call succeeds if I create a random buffer directly
in my tests.
Issue Time Tracking
-------------------
Worklog Id: (was: 774786)
Time Spent: 3h 10m (was: 3h)
> Implement a variant of ElasticByteBufferPool which uses weak references for
> garbage collection.
> -----------------------------------------------------------------------------------------------
>
> Key: HADOOP-18105
> URL: https://issues.apache.org/jira/browse/HADOOP-18105
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: common, fs
> Reporter: Mukund Thakur
> Assignee: Mukund Thakur
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Currently in hadoop codebase, we have two classes which implements byte
> buffers pooling.
> One is ElasticByteBufferPool which doesn't use weak references and thus could
> cause memory leaks in production environment.
> Other is DirectBufferPool which uses weak references but doesn't support
> caller's preference for either on-heap or off-heap buffers.
>
> The idea is to create an improved version of ElasticByteBufferPool by
> subclassing it ( as it is marked as public and stable and used widely in hdfs
> ) with essential functionalities required for effective buffer pooling. This
> is important for the parent Vectored IO work.
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