[
https://issues.apache.org/jira/browse/BEAM-11435?focusedWorklogId=522677&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-522677
]
ASF GitHub Bot logged work on BEAM-11435:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 10/Dec/20 11:37
Start Date: 10/Dec/20 11:37
Worklog Time Spent: 10m
Work Description: dmvk opened a new pull request #13522:
URL: https://github.com/apache/beam/pull/13522
https://issues.apache.org/jira/browse/BEAM-11435
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 522677)
Remaining Estimate: 0h
Time Spent: 10m
> Reuse already set timers instead of recreating them in Flink Streaming Runner
> -----------------------------------------------------------------------------
>
> Key: BEAM-11435
> URL: https://issues.apache.org/jira/browse/BEAM-11435
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.23.0, 2.24.0, 2.25.0
> Reporter: David Morávek
> Assignee: David Morávek
> Priority: P1
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When we re-set a timer, new timer goes trough following life-cycle:
> 1) Find previously set timer with the same id
> 2) Cancel any previously set timer with the same id
> 3) Set a new timer
> We can skip 2) and 3), if the new timer is the same as previously set timer.
> There should be a great performance impact on GC timers, especially with
> RocksDB backend, where 2) and 3) are expensive operations.
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