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From paul-rogers <...@git.apache.org>
Subject [GitHub] drill pull request #672: DRILL-5085: Add / update description for dynamic UD...
Date Wed, 30 Nov 2016 16:22:27 GMT
Github user paul-rogers commented on a diff in the pull request:

    https://github.com/apache/drill/pull/672#discussion_r90268383
  
    --- Diff: exec/java-exec/src/main/resources/drill-module.conf ---
    @@ -45,7 +45,7 @@ drill.client: {
       supports-complex-types: true
     }
     
    -// Directory is used as base for temporary storage of Dynamic UDF jars.
    +// Directory is used as root for temporary storage of Dynamic UDF jars.
    --- End diff --
    
    Where does the user configure the suffix added to this directory to get the temp dir for
a given cluster? For example, should we have something like:
    
    drill.cluster-temp-dir: "${drill.tmp-dir}/${drill.exec.zk.root}"
    
    Note that tmp itself is a shared resource. If it is in /tmp, then multiple clusters will
use it. If it is in $DRILL_HOME/tmp, then still multiple clusters will use it. Only if it
is configured as $DRILL_SITE/tmp can we be guaranteed only one cluster will use the directory
(because only one cluster can use each $DRILL_SITE dir -- that's how $DRILL_SITE is defined.)


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