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Posted to issues@hbase.apache.org by "ronghai.ma (JIRA)" <ji...@apache.org> on 2012/08/01 21:56:03 UTC
[jira] [Created] (HBASE-6491) add limit function at ClientScanner
ronghai.ma created HBASE-6491:
---------------------------------
Summary: add limit function at ClientScanner
Key: HBASE-6491
URL: https://issues.apache.org/jira/browse/HBASE-6491
Project: HBase
Issue Type: Improvement
Reporter: ronghai.ma
Attachments: ClientScanner.txt
Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Attachment: HBASE-6491.patch.1.jpg
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.94.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.94.0
>
> Attachments: HBASE-6491.patch, HBASE-6491.patch.1.jpg
>
>
> Get N rows from START row number.
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[jira] [Assigned] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma reassigned HBASE-6491:
---------------------------------
Assignee: ronghai.ma
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Attachments: ClientScanner.txt
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Affects Version/s: (was: 0.94.0)
0.96.0
Fix Version/s: (was: 0.94.0)
0.96.0
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: HBASE-6491.patch
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "bill (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
bill updated HBASE-6491:
------------------------
Description: Add a new method in ClientScanner to implement a function like LIMIT in MySQL. (was: Get N rows from START row number.)
Issue Type: New Feature (was: Improvement)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13460324#comment-13460324 ]
ronghai.ma commented on HBASE-6491:
-----------------------------------
[~jeason]
Scenario : scaning more than one region.
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: Client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13427401#comment-13427401 ]
Hadoop QA commented on HBASE-6491:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12538918/ClientScanner.java
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified tests.
Please justify why no new tests are needed for this patch.
Also please list what manual steps were performed to verify this patch.
-1 patch. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/2483//console
This message is automatically generated.
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426857#comment-13426857 ]
ronghai.ma commented on HBASE-6491:
-----------------------------------
public Result[] limit(int start, int nbRows){
ArrayList<Result> resultList = new ArrayList<Result>(nbRows);
for(int i = 1;i < start && next() != null; i++);
Result next = null;
for(int i = 0; i < nbRows && (next = next()) != null; i++){
resultList.add(next);
}
return resultList.toArray(new Result[resultList.size()]);
}
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Reporter: ronghai.ma
> Attachments: ClientScanner.txt
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Attachment: ClientScanner.txt
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Reporter: ronghai.ma
> Attachments: ClientScanner.txt
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Status: Patch Available (was: In Progress)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-6491:
-------------------------
Fix Version/s: (was: 0.96.0)
Moving out till questions answered.
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: Client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426893#comment-13426893 ]
Hadoop QA commented on HBASE-6491:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12538831/HBASE-6491.patch.1.jpg
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified tests.
Please justify why no new tests are needed for this patch.
Also please list what manual steps were performed to verify this patch.
-1 patch. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/2474//console
This message is automatically generated.
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Components: client
> Affects Versions: 0.94.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.94.0
>
> Attachments: HBASE-6491.patch, HBASE-6491.patch.1.jpg
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Status: In Progress (was: Patch Available)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "bill (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13427112#comment-13427112 ]
bill commented on HBASE-6491:
-----------------------------
1. how about change the method's name to next
2. why not add the method in ResultScanner
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: HBASE-6491.patch
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Tags: limit
Fix Version/s: 0.94.0
Labels: patch (was: )
Affects Version/s: 0.94.0
Status: Patch Available (was: Open)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.94.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.94.0
>
> Attachments: HBASE-6491.patch
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Attachment: (was: ClientScanner.txt)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Attachments: HBASE-6491.patch
>
>
> Get N rows from START row number.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465036#comment-13465036 ]
stack commented on HBASE-6491:
------------------------------
What if nbRows is 1M and the rows are 100MB each? Can this not be done as an option on Scan? Then clientside we look for limit count and as you next through the results, we'll intercede and shut the scanner once we have hit limit?
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: Client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Component/s: client
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Components: client
> Affects Versions: 0.94.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.94.0
>
> Attachments: HBASE-6491.patch, HBASE-6491.patch.1.jpg
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Attachment: (was: HBASE-6491.patch.1.jpg)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Components: client
> Affects Versions: 0.94.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.94.0
>
> Attachments: HBASE-6491.patch
>
>
> Get N rows from START row number.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Attachment: ClientScanner.java
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "ronghai.ma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ronghai.ma updated HBASE-6491:
------------------------------
Attachment: HBASE-6491.patch
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: Improvement
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Attachments: HBASE-6491.patch
>
>
> Get N rows from START row number.
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[jira] [Commented] (HBASE-6491) add limit function at ClientScanner
Posted by "Jieshan Bean (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13460126#comment-13460126 ]
Jieshan Bean commented on HBASE-6491:
-------------------------------------
@ronghai: Why not use PageFilter instead of adding this new method?
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: Client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: ClientScanner.java, HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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[jira] [Updated] (HBASE-6491) add limit function at ClientScanner
Posted by "bill (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
bill updated HBASE-6491:
------------------------
Tags: limit like, scan with offset (was: limit)
> add limit function at ClientScanner
> -----------------------------------
>
> Key: HBASE-6491
> URL: https://issues.apache.org/jira/browse/HBASE-6491
> Project: HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.96.0
> Reporter: ronghai.ma
> Assignee: ronghai.ma
> Labels: patch
> Fix For: 0.96.0
>
> Attachments: HBASE-6491.patch
>
>
> Add a new method in ClientScanner to implement a function like LIMIT in MySQL.
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