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From "Reuben Kuhnert (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12612) beeline always exits with 0 status when reading query from standard input
Date Fri, 25 Mar 2016 16:47:25 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12612?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Reuben Kuhnert updated HIVE-12612:
----------------------------------
    Status: Patch Available  (was: Open)

> beeline always exits with 0 status when reading query from standard input
> -------------------------------------------------------------------------
>
>                 Key: HIVE-12612
>                 URL: https://issues.apache.org/jira/browse/HIVE-12612
>             Project: Hive
>          Issue Type: Bug
>          Components: Beeline
>    Affects Versions: 1.1.0
>         Environment: CDH5.5.0
>            Reporter: Paulo Sequeira
>            Assignee: Reuben Kuhnert
>            Priority: Minor
>         Attachments: HIVE-12612.01.patch, HIVE-12612.02.patch
>
>
> Similar to what was reported on HIVE-6978, but now it only happens when the query is
read from the standard input. For example, the following fails as expected:
> {code}
> bash$ if beeline -u "jdbc:hive2://..." -e "boo;" ; then echo "Ok?!" ; else echo "Failed!"
; fi
> Connecting to jdbc:hive2://...
> Connected to: Apache Hive (version 1.1.0-cdh5.5.0)
> Driver: Hive JDBC (version 1.1.0-cdh5.5.0)
> Transaction isolation: TRANSACTION_REPEATABLE_READ
> Error: Error while compiling statement: FAILED: ParseException line 1:0 cannot recognize
input near 'boo' '<EOF>' '<EOF>' (state=42000,code=40000)
> Closing: 0: jdbc:hive2://...
> Failed!
> {code}
> But the following does not:
> {code}
> bash$ if echo "boo;"|beeline -u "jdbc:hive2://..." ; then echo "Ok?!" ; else echo "Failed!"
; fi
> Connecting to jdbc:hive2://...
> Connected to: Apache Hive (version 1.1.0-cdh5.5.0)
> Driver: Hive JDBC (version 1.1.0-cdh5.5.0)
> Transaction isolation: TRANSACTION_REPEATABLE_READ
> Beeline version 1.1.0-cdh5.5.0 by Apache Hive
> 0: jdbc:hive2://...:8> Error: Error while compiling statement: FAILED: ParseException
line 1:0 cannot recognize input near 'boo' '<EOF>' '<EOF>' (state=42000,code=40000)
> 0: jdbc:hive2://...:8> Closing: 0: jdbc:hive2://...
> Ok?!
> {code}
> This was misleading our batch scripts to always believe that the execution of the queries
succeded, when sometimes that was not the case. 
> h2. Workaround
> We found we can work around the issue by always using the -e or the -f parameters, and
even reading the standard input through the /dev/stdin device (this was useful because a lot
of the scripts fed the queries from here documents), like this:
> {code:title=some-script.sh}
> #!/bin/sh
> set -o nounset -o errexit -o pipefail
> # As beeline is failing to report an error status if reading the query
> # to be executed from STDIN, check whether no -f or -e option is used
> # and, in that case, pretend it has to read the query from a regular
> # file using -f to read from /dev/stdin
> function beeline_workaround_exit_status () {
>     for arg in "$@"
>     do if [ "$arg" = "-f" -o "$arg" = "-e" ]
>        then beeline -u "..." "$@"
>             return
>        fi
>     done
>     beeline -u "..." "$@" -f /dev/stdin
> }
> beeline_workaround_exit_status <<EOF
> boo;
> EOF
> {code}



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