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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2009/02/25 22:41:01 UTC
[jira] Created: (HBASE-1224) Scanner returns values from before
startrow
Scanner returns values from before startrow
-------------------------------------------
Key: HBASE-1224
URL: https://issues.apache.org/jira/browse/HBASE-1224
Project: Hadoop HBase
Issue Type: Bug
Reporter: stack
Priority: Critical
Fix For: 0.19.1, 0.20.0
Ben Maurer reports our returning rows from before startrow -- lots of concurrent scanners run out of mapreduce jobs that are updating rows as they go.
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[jira] Updated: (HBASE-1224) Scanner returns values from before
startrow
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-1224:
-------------------------
Attachment: 1224-test.patch
> Scanner returns values from before startrow
> -------------------------------------------
>
> Key: HBASE-1224
> URL: https://issues.apache.org/jira/browse/HBASE-1224
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Critical
> Fix For: 0.19.1, 0.20.0
>
> Attachments: 1224-test.patch, 1224.patch, ben-1224.patch
>
>
> Ben Maurer reports our returning rows from before startrow -- lots of concurrent scanners run out of mapreduce jobs that are updating rows as they go.
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[jira] Resolved: (HBASE-1224) Scanner returns values from before
startrow
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack resolved HBASE-1224.
--------------------------
Resolution: Fixed
Fix Version/s: (was: 0.20.0)
Hadoop Flags: [Reviewed]
Applied Ben's patch and my test to 0.19 branch. TRUNK doesn't have this issue with hfile.
> Scanner returns values from before startrow
> -------------------------------------------
>
> Key: HBASE-1224
> URL: https://issues.apache.org/jira/browse/HBASE-1224
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Critical
> Fix For: 0.19.1
>
> Attachments: 1224-test.patch, 1224.patch, ben-1224.patch
>
>
> Ben Maurer reports our returning rows from before startrow -- lots of concurrent scanners run out of mapreduce jobs that are updating rows as they go.
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (HBASE-1224) Scanner returns values from before
startrow
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-1224:
-------------------------
Attachment: 1224.patch
Ben digging turned up fact that HalfMapFile sets current position back to midkey when its the top-half of a file and its first invocation of next.
Trying to reproduce in a unit test, I see this happening but higher up in HStoreFileScanner, while the wrong answer comes up out of the HalfMapFile, HSFS keeps iterating the HalfMapFile until it starts returning right answers. Something more subtle is going on. Meantime this patch makes halfmapfile do the right thing. Maybe it fixes Bens issue.
> Scanner returns values from before startrow
> -------------------------------------------
>
> Key: HBASE-1224
> URL: https://issues.apache.org/jira/browse/HBASE-1224
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Critical
> Fix For: 0.19.1, 0.20.0
>
> Attachments: 1224.patch
>
>
> Ben Maurer reports our returning rows from before startrow -- lots of concurrent scanners run out of mapreduce jobs that are updating rows as they go.
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[jira] Updated: (HBASE-1224) Scanner returns values from before
startrow
Posted by "Ben Maurer (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ben Maurer updated HBASE-1224:
------------------------------
Attachment: ben-1224.patch
My version of the patch
> Scanner returns values from before startrow
> -------------------------------------------
>
> Key: HBASE-1224
> URL: https://issues.apache.org/jira/browse/HBASE-1224
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Critical
> Fix For: 0.19.1, 0.20.0
>
> Attachments: 1224.patch, ben-1224.patch
>
>
> Ben Maurer reports our returning rows from before startrow -- lots of concurrent scanners run out of mapreduce jobs that are updating rows as they go.
--
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You can reply to this email to add a comment to the issue online.
[jira] Assigned: (HBASE-1224) Scanner returns values from before
startrow
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack reassigned HBASE-1224:
----------------------------
Assignee: Ben Maurer
> Scanner returns values from before startrow
> -------------------------------------------
>
> Key: HBASE-1224
> URL: https://issues.apache.org/jira/browse/HBASE-1224
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Ben Maurer
> Priority: Critical
> Fix For: 0.19.1
>
> Attachments: 1224-test.patch, 1224.patch, ben-1224.patch
>
>
> Ben Maurer reports our returning rows from before startrow -- lots of concurrent scanners run out of mapreduce jobs that are updating rows as they go.
--
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You can reply to this email to add a comment to the issue online.