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https://issues.apache.org/jira/browse/DRILL-4726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15464696#comment-15464696
 ] 

ASF GitHub Bot commented on DRILL-4726:
---------------------------------------

Github user arina-ielchiieva commented on a diff in the pull request:

    https://github.com/apache/drill/pull/574#discussion_r77501913
  
    --- Diff: exec/java-exec/src/main/resources/drill-module.conf ---
    @@ -189,6 +189,15 @@ drill.exec: {
       debug: {
         return_error_for_failure_in_cancelled_fragments: false
       }
    +  udf: {
    +    retry.times: 5,
    +    directory: {
    +      base: "/tmp",
    +      staging: ${drill.exec.zk.root}"/udf/staging",
    --- End diff --
    
    Using drill.dfs.home is not quite right, since I am not obliging user to 
use dfs. User can user fs, if he is running Drill in embedded more or just 
using one node (let's say for developing / testing purposes). Though I might 
use drill.fs.home and default it to /user/drill.
    
    staging: ${drill.exec.zk.root}"/udf/staging" - corresponds to directory, 
not znode and I need ${drill.exec.zk.root} to separate jars from different 
Drill clusters.


> Dynamic UDFs support
> --------------------
>
>                 Key: DRILL-4726
>                 URL: https://issues.apache.org/jira/browse/DRILL-4726
>             Project: Apache Drill
>          Issue Type: New Feature
>    Affects Versions: 1.6.0
>            Reporter: Arina Ielchiieva
>            Assignee: Arina Ielchiieva
>             Fix For: Future
>
>
> Allow register UDFs without  restart of Drillbits.
> Design is described in document below:
> https://docs.google.com/document/d/1FfyJtWae5TLuyheHCfldYUpCdeIezR2RlNsrOTYyAB4/edit?usp=sharing
>  



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