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From "Heng Chen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15765) RPC handlers should steal from other queues in the same or higher priority
Date Tue, 10 May 2016 06:20:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Heng Chen updated HBASE-15765:
------------------------------
    Attachment: HBASE-15765_v1.patch

fix failed test case

> RPC handlers should steal from other queues in the same or higher priority
> --------------------------------------------------------------------------
>
>                 Key: HBASE-15765
>                 URL: https://issues.apache.org/jira/browse/HBASE-15765
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Enis Soztutar
>         Attachments: HBASE-15765.patch, HBASE-15765_v1.patch
>
>
> With the simple rpc scheduler model by default, a request first falls in one type of
queue (priority, general, replication) and it will get "sharded" in a queue within that priority
level (for example there are 2 queues for the high priority level). The handlers can only
take from their specific queues, and nothing else. 
> Even if a request is waiting in a high priority queue, the handlers within the same priority
level or a lower priority level will not see these requests (which is the root cause for HBASE-15613).
We should be able to steal from other queues, without losing the prioritization and sharding
benefits. 



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