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https://issues.apache.org/jira/browse/KUDU-1380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon reassigned KUDU-1380:
---------------------------------
Assignee: Todd Lipcon
> Scanners rewind to beginning of the tablet on SERVER_TOO_BUSY
> -------------------------------------------------------------
>
> Key: KUDU-1380
> URL: https://issues.apache.org/jira/browse/KUDU-1380
> Project: Kudu
> Issue Type: Bug
> Affects Versions: 0.7.1
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Blocker
>
> When a scanner receives ERROR_SERVER_TOO_BUSY from an overloaded TS, the
> CanBeRetried() function indicates that it is safe to retry. However, this
> ends up calling through to ReopenCurrentTablet() which rewinds back to the
> start of the tablet in the case that the scan wasn't marked as fault-tolerant.
> In the case of a lot of concurrent TPCH Q6 queries via Impala, this ended up
> resulting in "never-ending" queries - each scanner was likely to hit the
> occasional TOO_BUSY error and start back at the beginning.
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