[jira] [Commented] (HBASE-20890) PE filterScan seems to be stuck forever

["Ted Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-20890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16544563#comment-16544563 ] 

Ted Yu commented on HBASE-20890:
--------------------------------

It was just that FilteredScanTest is called for every row.

From my cluster, it took about ~2 seconds for one row (5 regions for TestTable). Rough calculation shows that filterScan would take 23 days to finish :-)

> PE filterScan seems to be stuck forever
> ---------------------------------------
>
>                 Key: HBASE-20890
>                 URL: https://issues.apache.org/jira/browse/HBASE-20890
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.3.3
>            Reporter: Vikas Vishwakarma
>            Priority: Minor
>
> Command Used
> {code:java}
> ~/current/bigdata-hbase/hbase/hbase/bin/hbase pe --nomapred randomWrite 1 > write 2>&1
> ~/current/bigdata-hbase/hbase/hbase/bin/hbase pe --nomapred filterScan 1 > filterScan 2>&1
> {code}
>  
> Output
> This kept running for several hours just printing the below messages in logs
>  
> {code:java}
> -bash-4.1$ grep "Advancing internal scanner to startKey" filterScan.1 | head
> 2018-07-13 10:44:45,188 DEBUG [TestClient-0] client.ClientScanner - Advancing internal scanner to startKey at '0000000000000000000052359'
> 2018-07-13 10:44:45,976 DEBUG [TestClient-0] client.ClientScanner - Advancing internal scanner to startKey at '0000000000000000000052359'
> 2018-07-13 10:44:46,695 DEBUG [TestClient-0] client.ClientScanner - Advancing internal scanner to startKey at '0000000000000000000052359'
> .....
> -bash-4.1$ grep "Advancing internal scanner to startKey" filterScan.1 | tail
> 2018-07-15 06:20:22,353 DEBUG [TestClient-0] client.ClientScanner - Advancing internal scanner to startKey at '0000000000000000000052359'
> 2018-07-15 06:20:23,044 DEBUG [TestClient-0] client.ClientScanner - Advancing internal scanner to startKey at '0000000000000000000052359'
> 2018-07-15 06:20:23,768 DEBUG [TestClient-0] client.ClientScanner - Advancing internal scanner to startKey at '0000000000000000000052359'
> {code}
>  



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