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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17595) Add partial result support for small/limited scan
Date Thu, 23 Feb 2017 14:25:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15880510#comment-15880510

Hudson commented on HBASE-17595:

FAILURE: Integrated in Jenkins build HBase-1.4 #643 (See [https://builds.apache.org/job/HBase-1.4/643/])
HBASE-17595 Add partial result support for small/limited scan (zhangduo: rev 3e2a6784c7416b712f9ad9c24c26f85a804a4488)
* (add) hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestScannersFromClientSide2.java
* (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java
* (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/Result.java
* (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/TestPartialResultsFromClientSide.java
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestScannersFromClientSide.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ScannerContext.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
* (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java

> Add partial result support for small/limited scan
> -------------------------------------------------
>                 Key: HBASE-17595
>                 URL: https://issues.apache.org/jira/browse/HBASE-17595
>             Project: HBase
>          Issue Type: Sub-task
>          Components: asyncclient, Client, scan
>    Affects Versions: 2.0.0, 1.4.0
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>             Fix For: 2.0.0, 1.4.0
>         Attachments: HBASE-17595-branch-1.patch, HBASE-17595.patch, HBASE-17595-v1.patch
> The partial result support is marked as a 'TODO' when implementing HBASE-17045. And when
implementing HBASE-17508, we found that if we make small scan share the same logic with general
scan, the scan request other than open scanner will not have the small flag so the server
may return  partial result to the client and cause some strange behavior. It is solved by
modifying the logic at server side, but this means the 1.4.x client is not safe to contact
with earlier 1.x server. So we'd better address the problem at client side. Marked as blocker
as this issue should be finished before any 2.x and 1.4.x releases.

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