[jira] [Commented] (DRILL-4921) Scripts drill_config.sh, drillbit.sh, and drill-embedded fail when accessed via a symbolic link

["Boaz Ben-Zvi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-4921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15537059#comment-15537059 ] 

Boaz Ben-Zvi commented on DRILL-4921:
-------------------------------------

To save some time/effort: maybe this work can be lumped together with DRILL-4870 (fix JAVA_HOME in drill_config.sh) (note [~Paul.Rogers])



> Scripts drill_config.sh,  drillbit.sh, and drill-embedded fail when accessed via a symbolic link
> ------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-4921
>                 URL: https://issues.apache.org/jira/browse/DRILL-4921
>             Project: Apache Drill
>          Issue Type: Bug
>          Components:  Server
>    Affects Versions: 1.8.0
>         Environment: The drill-embedded on the Mac; the other files on Linux
>            Reporter: Boaz Ben-Zvi
>            Priority: Minor
>             Fix For: 1.9.0
>
>
>   Several of the drill... scripts under $DRILL_HOME/bin use "pwd" to produce the local path of that script. However "pwd" defaults to "logical" (i.e. the same as "pwd -L"); so if accessed via a symbolic link, that link is used verbatim in the path, which can produce wrong paths (e.g., when followed by "cd ..").
> For example, creating a symbolic link and using it (on the Mac):
> $  cd ~/drill
> $  ln -s $DRILL_HOME/bin 
> $  bin/drill-embedded
> ERROR: Drill config file missing: /Users/boazben-zvi/drill/conf/drill-override.conf -- Wrong config dir?
> Similarly on Linux the CLASS_PATH gets set wrong (when running "drillbit.sh start" via a symlink).
> Solution: need to replace all the "pwd" in all the scripts with "pwd -P" which produces the Physical path. (Or replace a preceding "cd" with "cd -P" which does the same).
> Relevant scripts:
> =============
> $ cd bin; grep pwd *
> drillbit.sh:bin=`cd "$bin">/dev/null; pwd`
> drillbit.sh:  echo "cwd:" `pwd`
> drill-conf:bin=`cd "$bin">/dev/null; pwd`
> drill-config.sh:home=`cd "$bin/..">/dev/null; pwd`
> drill-config.sh:      DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
> drill-config.sh:    JAVA_HOME="$( cd -P "$( dirname "$SOURCE" )" && cd .. && pwd )"
> drill-embedded:bin=`cd "$bin">/dev/null; pwd`
> drill-localhost:bin=`cd "$bin">/dev/null; pwd`
> submit_plan:bin=`cd "$bin">/dev/null; pwd`
>  



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