[jira] [Resolved] (IMPALA-1161) Hive Server 2 error log gives inconsistent results on backend progress

["Tim Armstrong (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-1161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong resolved IMPALA-1161.
-----------------------------------
    Resolution: Cannot Reproduce

Query lifecycle has changed a lot since this, I'll close it since it's probably been fixed.

> Hive Server 2 error log gives inconsistent results on backend progress
> ----------------------------------------------------------------------
>
>                 Key: IMPALA-1161
>                 URL: https://issues.apache.org/jira/browse/IMPALA-1161
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Distributed Exec
>    Affects Versions: Impala 1.4
>            Reporter: Abdullah Yousufi
>            Priority: Minor
>
> There appears to be some lag between a query's execution and its log results.
> For example, running the same select query for a certain table sometimes accurately returns '100% Complete (3 out of 3),' but it might also return a partial completion, such as '66% Complete (2 out of 3)' or '33% Complete (1 out of 3),' even though the results are complete each time. 
> Impyla's implementation of execute is synchronous, so it waits until the query's execution status is in the finish state. Retrieving the error log after this point gives inconsistent backend progress results, though waiting a second before fetching the log or retrieving the error log a bit later, such as after fetching the results, fixes (or perhaps masks) the issue.
> This issue also occurs in Hue.
> This is also difficult to reproduce, though I've found creating a table with 10 to 30 rows and continuously fetching all rows generally results in the issue.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)