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Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2010/11/21 16:51:13 UTC
[jira] Created: (HBASE-3255) Allow Export tool to choose subset of
rows
Allow Export tool to choose subset of rows
------------------------------------------
Key: HBASE-3255
URL: https://issues.apache.org/jira/browse/HBASE-3255
Project: HBase
Issue Type: Improvement
Components: util
Affects Versions: 0.20.6
Reporter: Ted Yu
org.apache.hadoop.hbase.mapreduce.Export should allow user to specify a subset of rows.
This capability would help develop solution for problem which produces unwanted rows (in .META. table e.g.) that must be deleted.
One such case is https://issues.apache.org/jira/browse/HBASE-3251
We can export the dangling row(s) from .META., delete it and later import the row(s) to (another) hbase instance.
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[jira] Commented: (HBASE-3255) Allow Export tool to choose subset
of rows
Posted by "Ted Yu (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12934331#action_12934331 ]
Ted Yu commented on HBASE-3255:
-------------------------------
I use the following code in Export.createSubmittableJob():
{code}
if (args.length > 5) {
// to select rows that match regex, such as "pkgindex.+"
Filter f = new RowFilter(CompareOp.EQUAL,
new RegexStringComparator(args[5]));
s.setFilter(f);
}
{code}
> Allow Export tool to choose subset of rows
> ------------------------------------------
>
> Key: HBASE-3255
> URL: https://issues.apache.org/jira/browse/HBASE-3255
> Project: HBase
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.20.6
> Reporter: Ted Yu
>
> org.apache.hadoop.hbase.mapreduce.Export should allow user to specify a subset of rows.
> This capability would help develop solution for problem which produces unwanted rows (in .META. table e.g.) that must be deleted.
> One such case is https://issues.apache.org/jira/browse/HBASE-3251
> We can export the dangling row(s) from .META., delete it and later import the row(s) to (another) hbase instance.
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[jira] Commented: (HBASE-3255) Allow Export tool to choose subset
of rows
Posted by "Ted Yu (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12934339#action_12934339 ]
Ted Yu commented on HBASE-3255:
-------------------------------
org.apache.hadoop.hbase.mapreduce.Import should provide capability to transform each row before writing into target hbase instance.
This is useful to reconstruct the scenario of HBASE-3251 without disrupting normal operations to the table which was broken but later created.
> Allow Export tool to choose subset of rows
> ------------------------------------------
>
> Key: HBASE-3255
> URL: https://issues.apache.org/jira/browse/HBASE-3255
> Project: HBase
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.20.6
> Reporter: Ted Yu
>
> org.apache.hadoop.hbase.mapreduce.Export should allow user to specify a subset of rows.
> This capability would help develop solution for problem which produces unwanted rows (in .META. table e.g.) that must be deleted.
> One such case is https://issues.apache.org/jira/browse/HBASE-3251
> We can export the dangling row(s) from .META., delete it and later import the row(s) to (another) hbase instance.
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[jira] Commented: (HBASE-3255) Allow Export tool to choose subset
of rows
Posted by "Lars George (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12934436#action_12934436 ]
Lars George commented on HBASE-3255:
------------------------------------
Hi Ted,
Isn't this a dupe from your HBASE-2495? And for the change of Import please create a new JIRA with the details on what you suggest please.
Lars
> Allow Export tool to choose subset of rows
> ------------------------------------------
>
> Key: HBASE-3255
> URL: https://issues.apache.org/jira/browse/HBASE-3255
> Project: HBase
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.20.6
> Reporter: Ted Yu
>
> org.apache.hadoop.hbase.mapreduce.Export should allow user to specify a subset of rows.
> This capability would help develop solution for problem which produces unwanted rows (in .META. table e.g.) that must be deleted.
> One such case is https://issues.apache.org/jira/browse/HBASE-3251
> We can export the dangling row(s) from .META., delete it and later import the row(s) to (another) hbase instance.
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