[jira] [Reopened] (FLINK-14894) HybridOffHeapUnsafeMemorySegmentTest#testByteBufferWrap failed on Travis

["Till Rohrmann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-14894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann reopened FLINK-14894:
-----------------------------------

Reverting the commits of this issue because they are causing higher memory pressure. Due to this, our Travis builds are failing because we don't release the unsafely allocated memory blocks fast enough.

I guess this means that we should monitor the unsafe memory usage and try to recycle freed segments when requesting new segments. This will prevent the accumulation of unused memory segments which causes memory pressure.

> HybridOffHeapUnsafeMemorySegmentTest#testByteBufferWrap failed on Travis
> ------------------------------------------------------------------------
>
>                 Key: FLINK-14894
>                 URL: https://issues.apache.org/jira/browse/FLINK-14894
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.10.0
>            Reporter: Gary Yao
>            Assignee: Andrey Zagrebin
>            Priority: Major
>              Labels: pull-request-available, test-stability
>             Fix For: 1.10.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> {noformat}
> HybridOffHeapUnsafeMemorySegmentTest>MemorySegmentTestBase.testByteBufferWrapping:2465 expected:<992288337> but was:<196608>
> {noformat}
> https://api.travis-ci.com/v3/job/258950527/log.txt



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