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Posted to issues@hbase.apache.org by "Heng Chen (JIRA)" <ji...@apache.org> on 2015/10/23 10:51:27 UTC

[jira] [Updated] (HBASE-14680) Two configs for snapshot timeout and better defaults

     [ https://issues.apache.org/jira/browse/HBASE-14680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Heng Chen updated HBASE-14680:
------------------------------
    Attachment: HBASE-14680.patch

I upload a patch as your suggestions.

But i has a question, after we remove timeout in disabled table snapshot,  how to deal with situation if snapshot action hangs by some reason something like 'Region Connection timeout'..

> Two configs for snapshot timeout and better defaults
> ----------------------------------------------------
>
>                 Key: HBASE-14680
>                 URL: https://issues.apache.org/jira/browse/HBASE-14680
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Enis Soztutar
>             Fix For: 2.0.0, 1.3.0, 1.2.1, 1.0.3, 1.1.3, 0.98.16
>
>         Attachments: HBASE-14680.patch
>
>
> One of the clusters timed out taking a snapshot for a disabled table. The table is big enough, and the master operation takes more than 1 min to complete. However while trying to increase the timeout, we noticed that there are two parameters with very similar names configuring different things: 
> {{hbase.snapshot.master.timeout.millis}} is defined in SnapshotDescriptionUtils and is send to client side and used in disabled table snapshot. 
> {{hbase.snapshot.master.timeoutMillis}} is defined in SnapshotManager and used as the timeout for the procedure execution. 
> So, there are a couple of improvements that we can do: 
>  - 1 min is too low for big tables. We need to set this to 5 min or 10 min by default. Even a 6T table which is medium sized fails. 
>  - Unify the two timeouts into one. Decide on either of them, and deprecate the other. Use the biggest one for BC. 
>  - Add the timeout to hbase-default.xml. 
>  - Why do we even have a timeout for disabled table snapshots? The master is doing the work so we should not timeout in any case. 



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