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From "Hiroshi Ikeda (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16498) NPE when Scan's stopRow is set NULL
Date Tue, 30 Aug 2016 04:32:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15447991#comment-15447991
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Hiroshi Ikeda commented on HBASE-16498:
---------------------------------------

It is better to add a comment about how to scan to the end row.
If there is no description it goes without saying that the behavior is undefined.


> NPE when Scan's stopRow is set NULL
> -----------------------------------
>
>                 Key: HBASE-16498
>                 URL: https://issues.apache.org/jira/browse/HBASE-16498
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 2.0.0, 1.3.0, 1.4.0, 1.1.6, 1.2.3
>            Reporter: Pankaj Kumar
>            Assignee: Pankaj Kumar
>            Priority: Minor
>         Attachments: HBASE-16498-V2.patch, HBASE-16498.patch
>
>
> During scan operation we validate whether this is the last region of table, if not then
records will be retrieved from nextscanner. If stop row is set null then NPE will be thrown
while validating stop row with region endkey.
> {noformat}
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.client.ClientScanner.checkScanStopRow(ClientScanner.java:217)
> 	at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:266)
> 	at org.apache.hadoop.hbase.client.ClientScanner.possiblyNextScanner(ClientScanner.java:237)
> 	at org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:537)
> 	at org.apache.hadoop.hbase.client.ClientScanner.nextWithSyncCache(ClientScanner.java:363)
> 	at org.apache.hadoop.hbase.client.ClientSimpleScanner.next(ClientSimpleScanner.java:50)
> 	at org.apache.hadoop.hbase.client.AbstractClientScanner.next(AbstractClientScanner.java:70)
> 	at org.apache.hadoop.hbase.client.TestAdmin2.testScanWithSplitKeysAndNullStartEndRow(TestAdmin2.java:803)
> {noformat}
> We should return empty byte array when start/end row is set NULL.



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