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https://issues.apache.org/jira/browse/BEAM-14134?focusedWorklogId=745824&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-745824
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ASF GitHub Bot logged work on BEAM-14134:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 22/Mar/22 13:33
Start Date: 22/Mar/22 13:33
Worklog Time Spent: 10m
Work Description: steveniemitz commented on pull request #17134:
URL: https://github.com/apache/beam/pull/17134#issuecomment-1075186202
not sure what's going on with the precommit here, the failure seems
unrelated in a metrics test.
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Issue Time Tracking
-------------------
Worklog Id: (was: 745824)
Time Spent: 2.5h (was: 2h 20m)
> Many coders cause significant unnecessary allocations
> -----------------------------------------------------
>
> Key: BEAM-14134
> URL: https://issues.apache.org/jira/browse/BEAM-14134
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Steve Niemitz
> Assignee: Steve Niemitz
> Priority: P2
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> Many coders (BigEndian*, Map, Iterable, Instant) use DataInputStream to read
> longs/ints/shorts. Internally each DataInputStream allocates ~200 bytes of
> buffers when instantiated. This means every long, int, short, etc decoded
> allocates over 200 bytes.
> We should eliminate all uses of DataInputStream in hot-paths and replace it
> with something more efficient.
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