[ 
https://issues.apache.org/jira/browse/HBASE-18019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16004048#comment-16004048
 ] 

Chia-Ping Tsai commented on HBASE-18019:
----------------------------------------

I will fix this after resolving HBASE-17887. Otherwise, the TestAcid* will fail 
and confuse us.

> Clear redundant memstore scanners
> ---------------------------------
>
>                 Key: HBASE-18019
>                 URL: https://issues.apache.org/jira/browse/HBASE-18019
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>             Fix For: 2.0.0
>
>
> The HBASE-17655 remove the MemStoreScanner and it causes that the 
> MemStore#getScanner(readpt) returns multi KeyValueScanner which consist of 
> active, snapshot and pipeline. But StoreScanner only remove one mem scanner 
> when refreshing current scanners.
> {code}
>     for (int i = 0; i < currentScanners.size(); i++) {
>       if (!currentScanners.get(i).isFileScanner()) {
>         currentScanners.remove(i);
>         break;
>       }
>     }
> {code}
> The older scanners kept in the StoreScanner will hinder GC from releasing 
> memory and lead to multiple scans on the same data.
>  



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Reply via email to