[jira] Updated: (HADOOP-1579) [hbase] Add new WhileMatchRowFilter and StopRowFilter filters

["Izaak Rubin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-1579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Izaak Rubin updated HADOOP-1579:
--------------------------------

    Attachment: HADOOP-1579.patch

A patch to add WhileMatchRowFilter, StopRowFilter, and their respective JUnit tests.  The tests have compiled successfully on my computer.

> [hbase] Add new WhileMatchRowFilter and StopRowFilter filters
> -------------------------------------------------------------
>
>                 Key: HADOOP-1579
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1579
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: contrib/hbase
>            Reporter: Izaak Rubin
>            Priority: Minor
>         Attachments: HADOOP-1579.patch
>
>
> I've created two additional filters for HBase: WhileMatchRowFilter and StopRowFilter.  WhileMatchRowFilter is an extension of RegExpRowFilter; it also filters rows based on whether they match a specified regex.  However, unlike its parent, WhileMatchRowFilter filters everything after it's first filtered row - once a row fails to match regex or column specifications, filterAllRemaining() always returns true.  This type of functionality will be useful when filtering for a set of adjacent rows that match a certain regex (as opposed to every row that matches that regex).
> StopRowFilter filters out every row greater than or equal to a specified rowKey (the stopRow).  The filter assumes that the rowKeys it receives are in alphabetical order, so once a key greater than the stopRow is encountered filterAllRemaining() will return true.  StopRowFilter will be useful for alphabetical filtering.
> Both filters come with JUnit tests, namely TestWhileMatchRowFilter and TestStopRowFilter.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.