[
https://issues.apache.org/jira/browse/HBASE-17449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16353961#comment-16353961
]
Peter Somogyi commented on HBASE-17449:
---------------------------------------
I started to look into how can we test the different timeouts. My idea is to
start up a minicluster, execute different types of requests (mutations, scans,
admin operations, etc.) while we add some delay on the server side.
What I have already noticed is that even to start up a cluster
"hbase.client.operation.timeout" is in use. When I put it to 1ms (I know it is
not something you would use in real life scenario) the cluster did not come up.
It caused endless retries even though I saw DoNotRetryIOException in the log.
What do you think about this approach?
> Add explicit document on different timeout settings
> ---------------------------------------------------
>
> Key: HBASE-17449
> URL: https://issues.apache.org/jira/browse/HBASE-17449
> Project: HBase
> Issue Type: Improvement
> Components: documentation
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Critical
> Fix For: 2.0.0-beta-2
>
>
> Currently we have more than one timeout settings, mainly includes:
> * hbase.rpc.timeout
> * hbase.client.operation.timeout
> * hbase.client.scanner.timeout.period
> And in latest branch-1 or master branch code, we will have two other
> properties:
> * hbase.rpc.read.timeout
> * hbase.rpc.write.timeout
> However, in current refguid we don't have explicit instruction on the
> difference of these timeout settings (there're explanations for each
> property, but no instruction on when to use which)
> In my understanding, for RPC layer timeout, or say each rpc call:
> * Scan (openScanner/next): controlled by hbase.client.scanner.timeout.period
> * Other operations:
> 1. For released versions: controlled by hbase.rpc.timeout
> 2. For 1.4+ versions: read operation controlled by hbase.rpc.read.timeout,
> write operation controlled by hbase.rpc.write.timeout, or hbase.rpc.timeout
> if the previous two are not set.
> And hbase.client.operation.timeout is a higher-level control counting retry
> in, or say the overall control for one user call.
> After this JIRA, I hope when users ask questions like "What settings I should
> use if I don't want to wait for more than 1 second for a single
> put/get/scan.next call", we could give a neat answer.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
