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Posted to dev@hbase.apache.org by "Juhani Connolly (JIRA)" <ji...@apache.org> on 2010/04/19 09:23:49 UTC
[jira] Created: (HBASE-2466) Improving filter API to allow for
modification of keyvalue list by filter
Improving filter API to allow for modification of keyvalue list by filter
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Key: HBASE-2466
URL: https://issues.apache.org/jira/browse/HBASE-2466
Project: Hadoop HBase
Issue Type: Improvement
Components: filters, regionserver
Reporter: Juhani Connolly
Priority: Minor
As it stands, the Filter interface allows filtering by
Filter#filterAllRemaining() -> true indicates scan is over, false, keep going on.
Filter#filterRowKey(byte[],int,int) -> true to drop this row, if false, we will also call
Filter#filterKeyValue(KeyValue) -> true to drop this key/value
Filter#filterRow() -> last chance to drop entire row based on the sequence of filterValue() calls. Eg: filter a row if it doesn't contain a specified column.
It would be useful to allow for an additional API in the form of a step to prune the list of KeyValues to be sent by implementing an additional
Filter#filterRow(List<KeyValue>)
This would allow for a user to write a custom filter against the api that drops unnecessary KeyValues according to user-defined rules.
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[jira] Resolved: (HBASE-2466) Improving filter API to allow for
modification of keyvalue list by filter
Posted by "ryan rawson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-2466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ryan rawson resolved HBASE-2466.
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Resolution: Fixed
> Improving filter API to allow for modification of keyvalue list by filter
> -------------------------------------------------------------------------
>
> Key: HBASE-2466
> URL: https://issues.apache.org/jira/browse/HBASE-2466
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: filters, regionserver
> Reporter: Juhani Connolly
> Priority: Minor
> Attachments: HBASE-2466-2.patch, HBASE-2466-4.patch, HBASE-2466-5.patch, HBASE-2466.patch
>
>
> As it stands, the Filter interface allows filtering by
> Filter#filterAllRemaining() -> true indicates scan is over, false, keep going on.
> Filter#filterRowKey(byte[],int,int) -> true to drop this row, if false, we will also call
> Filter#filterKeyValue(KeyValue) -> true to drop this key/value
> Filter#filterRow() -> last chance to drop entire row based on the sequence of filterValue() calls. Eg: filter a row if it doesn't contain a specified column.
> It would be useful to allow for an additional API in the form of a step to prune the list of KeyValues to be sent by implementing an additional
> Filter#filterRow(List<KeyValue>)
> This would allow for a user to write a custom filter against the api that drops unnecessary KeyValues according to user-defined rules.
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