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https://issues.apache.org/jira/browse/HBASE-9343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774187#comment-13774187
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Vandana Ayyalasomayajula commented on HBASE-9343:
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Hi,
I am on maternity leave till 9th December, 2013. If you need any assistance
please contact [email protected].
Thanks
Vandana
On Sep 18, 2013, at 6:04 PM, Nick Dimiduk (JIRA) <[email protected]> wrote:
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https://issues.apache.org/jira/browse/HBASE-9343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13771477#comment-13771477
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Nick Dimiduk commented on HBASE-9343:
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Yeah. I guess my issue comes down to the scanner as a resource at all. It's not
a data component or part of addressing data, so IMHO the user shouldn't be
thinking about it -- it's just an artifact of how the current API facilitates
data retrieval.
I hear what you're saying though. Since your proposal fits relatively well with
the existing semantics of {{GET /<table>/<rowprefix>*}}, let's see what the API
and code look like if you attach it there. Including some invocation examples
will be very helpful.
Thanks for bearing with me as I don the usability hat.
Implement stateless scanner for Stargate
----------------------------------------
Key: HBASE-9343
URL: https://issues.apache.org/jira/browse/HBASE-9343
Project: HBase
Issue Type: Improvement
Components: REST
Affects Versions: 0.94.11
Reporter: Vandana Ayyalasomayajula
Assignee: Vandana Ayyalasomayajula
Priority: Minor
Fix For: 0.98.0, 0.96.1
Attachments: HBASE-9343_94.00.patch, HBASE-9343_94.01.patch,
HBASE-9343_trunk.00.patch, HBASE-9343_trunk.01.patch,
HBASE-9343_trunk.01.patch, HBASE-9343_trunk.02.patch
The current scanner implementation for scanner stores state and hence not very
suitable for REST server failure scenarios. The current JIRA proposes to
implement a stateless scanner. In the first version of the patch, a new
resource class "ScanResource" has been added and all the scan parameters will
be specified as query params.
The following are the scan parameters
startrow - The start row for the scan.
endrow - The end row for the scan.
columns - The columns to scan.
starttime, endtime - To only retrieve columns within a specific range of
version timestamps,both start and end time must be specified.
maxversions - To limit the number of versions of each column to be returned.
batchsize - To limit the maximum number of values returned for each call to
next().
limit - The number of rows to return in the scan operation.
More on start row, end row and limit parameters.
1. If start row, end row and limit not specified, then the whole table will be
scanned.
2. If start row and limit (say N) is specified, then the scan operation will
return N rows from the start row specified.
3. If only limit parameter is specified, then the scan operation will return N
rows from the start of the table.
4. If limit and end row are specified, then the scan operation will return N
rows from start of table till the end row. If the end row is
reached before N rows ( say M and M < N ), then M rows will be returned to
the user.
5. If start row, end row and limit (say N ) are specified and N < number of
rows between start row and end row, then N rows from start row
will be returned to the user. If N > (number of rows between start row and
end row (say M), then M number of rows will be returned to the
user.
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> Implement stateless scanner for Stargate
> ----------------------------------------
>
> Key: HBASE-9343
> URL: https://issues.apache.org/jira/browse/HBASE-9343
> Project: HBase
> Issue Type: Improvement
> Components: REST
> Affects Versions: 0.94.11
> Reporter: Vandana Ayyalasomayajula
> Assignee: Vandana Ayyalasomayajula
> Priority: Minor
> Fix For: 0.98.0, 0.96.1
>
> Attachments: HBASE-9343_94.00.patch, HBASE-9343_94.01.patch,
> HBASE-9343_trunk.00.patch, HBASE-9343_trunk.01.patch,
> HBASE-9343_trunk.01.patch, HBASE-9343_trunk.02.patch
>
>
> The current scanner implementation for scanner stores state and hence not
> very suitable for REST server failure scenarios. The current JIRA proposes to
> implement a stateless scanner. In the first version of the patch, a new
> resource class "ScanResource" has been added and all the scan parameters will
> be specified as query params.
> The following are the scan parameters
> startrow - The start row for the scan.
> endrow - The end row for the scan.
> columns - The columns to scan.
> starttime, endtime - To only retrieve columns within a specific range of
> version timestamps,both start and end time must be specified.
> maxversions - To limit the number of versions of each column to be returned.
> batchsize - To limit the maximum number of values returned for each call to
> next().
> limit - The number of rows to return in the scan operation.
> More on start row, end row and limit parameters.
> 1. If start row, end row and limit not specified, then the whole table will
> be scanned.
> 2. If start row and limit (say N) is specified, then the scan operation will
> return N rows from the start row specified.
> 3. If only limit parameter is specified, then the scan operation will return
> N rows from the start of the table.
> 4. If limit and end row are specified, then the scan operation will return N
> rows from start of table till the end row. If the end row is
> reached before N rows ( say M and M < N ), then M rows will be returned to
> the user.
> 5. If start row, end row and limit (say N ) are specified and N < number
> of rows between start row and end row, then N rows from start row
> will be returned to the user. If N > (number of rows between start row and
> end row (say M), then M number of rows will be returned to the
> user.
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