[jira] [Resolved] (HBASE-26629) Add expiration for long time vacant scanners in Thrift2

["Duo Zhang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-26629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang resolved HBASE-26629.
-------------------------------
    Fix Version/s: 2.5.0
                   3.0.0-alpha-3
                   2.4.10
     Hadoop Flags: Reviewed
       Resolution: Fixed

Pushed to branch-2.4+.

Thanks [~xytss123] for contributing!

> Add expiration for long time vacant scanners in Thrift2
> -------------------------------------------------------
>
>                 Key: HBASE-26629
>                 URL: https://issues.apache.org/jira/browse/HBASE-26629
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance, Thrift
>            Reporter: Yutong Xiao
>            Assignee: Yutong Xiao
>            Priority: Major
>             Fix For: 2.5.0, 3.0.0-alpha-3, 2.4.10
>
>
> In thrift1 implementation, the ThriftHBaseSerivceHandler holds a Cache with an expire time after access. This will make the long time vacant scanners be collected by gc. However, in thrift2 we do not have this feature and only use a map to store scanners and we need the client close the scanner manually. If not, the expired scanners will live in memory forever. In this case, I applied the cache expiration to thrift2 service.



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