[jira] Resolved: (HBASE-686) MemcacheScanner didn't return the first row(if it exists), cause HScannerInterface's output incorrect

["Jim Kellerman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Kellerman resolved HBASE-686.
---------------------------------

    Resolution: Cannot Reproduce

This issue cannot be replicated on either the 0.1 branch or trunk. If there are explicit test cases attached which can reproduce the issue, please re-open with both the versions affected and please attach a test case that demonstrates that the test case fails for that release.

> MemcacheScanner didn't return the first row(if it exists), cause HScannerInterface's output incorrect
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-686
>                 URL: https://issues.apache.org/jira/browse/HBASE-686
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.1.2
>            Reporter: LN
>            Assignee: Jim Kellerman
>         Attachments: HBASE_686.java, HBASE_686.java
>
>
> HTable.obtainScanner methods should return the start row if it exists, although HTable's javadoc didn't clearly desc. but i found the result of htable scanners sometimes contain the start row, sometimes not.
> after more testing and code review, i found it should be a bug in HStore.Memcache.MemcacheScanner. in the constructor it set this.currentRow = firstRow, but when doing next(), there's a this.currentRow = getNextRow(this.currentRow) before fetch result.

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