[jira] [Commented] (ZOOKEEPER-1927) zkServer.sh fails to read dataDir (and others) from zoo.cfg on Solaris 10 (grep issue, manifests as FAILED TO WRITE PID).

["Michi Mutsuzaki (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13998947#comment-13998947 ] 

Michi Mutsuzaki commented on ZOOKEEPER-1927:
--------------------------------------------

Hi Ed,

It looks like [[:space:]]* is there to allow leading spaces, and it works on my box with GNU grep 2.10. What version of grep do you have?

> zkServer.sh fails to read dataDir (and others) from zoo.cfg on Solaris 10 (grep issue, manifests as FAILED TO WRITE PID).  
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1927
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1927
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 3.4.6
>         Environment: Solaris 5.10 
>            Reporter: Ed Schmed
>
> Fails to write PID file with a permissions error, because the startup script fails to read the dataDir variable from zoo.cfg, and then tries to use the drive root ( / ) as the data dir.
> Tracked the problem down to line 84 of zkServer.sh:
> ZOO_DATADIR="$(grep "^[[:space:]]*dataDir" "$ZOOCFG" | sed -e 's/.*=//')"
> If i run just that line and point it right at the config file, ZOO_DATADIR is empty.
> If I remove [[:space:]]* from the grep:
> ZOO_DATADIR="$(grep "^dataDir" "$ZOOCFG" | sed -e 's/.*=//')"
> Then it works fine. (If I also make the same change on line 164 and 169)
> My regex skills are pretty bad, so I'm afraid to comment on why [[space]]* needs to be in there?



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