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https://issues.apache.org/jira/browse/HBASE-10993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13992539#comment-13992539
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Hudson commented on HBASE-10993:
--------------------------------
SUCCESS: Integrated in HBase-TRUNK #5128 (See
[https://builds.apache.org/job/HBase-TRUNK/5128/])
HBASE-10993 Deprioritize long-running scanners (mbertozzi: rev 1593137)
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/PriorityFunction.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/AnnotationReadingPriorityFunction.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/util/BoundedPriorityBlockingQueue.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestSimpleRpcScheduler.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestQosFunction.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestBoundedPriorityBlockingQueue.java
> Deprioritize long-running scanners
> ----------------------------------
>
> Key: HBASE-10993
> URL: https://issues.apache.org/jira/browse/HBASE-10993
> Project: HBase
> Issue Type: Sub-task
> Reporter: Matteo Bertozzi
> Assignee: Matteo Bertozzi
> Priority: Minor
> Fix For: 0.99.0
>
> Attachments: HBASE-10993-v0.patch, HBASE-10993-v1.patch,
> HBASE-10993-v2.patch, HBASE-10993-v3.patch, HBASE-10993-v4.patch,
> HBASE-10993-v4.patch, HBASE-10993-v5.patch
>
>
> Currently we have a single call queue that serves all the "normal user"
> requests, and the requests are executed in FIFO.
> When running map-reduce jobs and user-queries on the same machine, we want to
> prioritize the user-queries.
> Without changing too much code, and not having the user giving hints, we can
> add a “vtime” field to the scanner, to keep track from how long is running.
> And we can replace the callQueue with a priorityQueue. In this way we can
> deprioritize long-running scans, the longer a scan request lives the less
> priority it gets.
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