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https://issues.apache.org/jira/browse/IMPALA-9953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sahil Takiar resolved IMPALA-9953.
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Fix Version/s: Impala 4.0
Resolution: Fixed
> Shell does not return all rows if a fetch times out in FINISHED state
> ---------------------------------------------------------------------
>
> Key: IMPALA-9953
> URL: https://issues.apache.org/jira/browse/IMPALA-9953
> Project: IMPALA
> Issue Type: Bug
> Components: Clients
> Reporter: Tim Armstrong
> Assignee: Sahil Takiar
> Priority: Blocker
> Labels: correctness
> Fix For: Impala 4.0
>
>
> I noticed that if a fetch times out, impala-shell will stop returning rows
> and close the query. It looks like this happens if the query transitions to
> FINISHED state, then the fetch times out
> I ran into this on an experimental branch where a sort deadlocked. I haven't
> been able to repro on master yet but I thought I should report it.
> The bug is here:
> {noformat}
> diff --git a/shell/impala_shell.py b/shell/impala_shell.py
> index e0d802626..323aee6c9 100755
> --- a/shell/impala_shell.py
> +++ b/shell/impala_shell.py
> @@ -1182,8 +1182,7 @@ class ImpalaShell(cmd.Cmd, object):
>
> for rows in rows_fetched:
> # IMPALA-4418: Break out of the loop to prevent printing an
> unnecessary empty line.
> - if len(rows) == 0:
> - break
> + if len(rows) == 0: continue
> self.output_stream.write(rows)
> num_rows += len(rows)
> {noformat}
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