[
https://issues.apache.org/jira/browse/HIVE-20814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18050384#comment-18050384
]
Dayakar M commented on HIVE-20814:
----------------------------------
Hi [~zabetak] ,
When I was analyzing it I came across two ways to load the UDFs on demand.
# *RELOAD FUNCTION;* --> Used to *force the current session to reload
functions* from the Metastore, making it aware of functions that were created,
updated, or dropped in other running sessions.
# *DESCRIBE FUNCTION <function_name>;* --> ** Based on the
‘{*}_hive.allow.udf.load.on.demand_{*}’ configuration (default \{*}_false_{*})
when the function not found in HS2, it try to load the function from HMS.
It looks as per code it works when the non-existing UDF used in query like
select, anyway I will test it once and confirm.
Thanks [~zabetak] for pointing it out.
> New create function between HiveServer2 is not synchronized
> ------------------------------------------------------------
>
> Key: HIVE-20814
> URL: https://issues.apache.org/jira/browse/HIVE-20814
> Project: Hive
> Issue Type: Improvement
> Components: Beeline
> Affects Versions: 1.1.0
> Reporter: leozhang
> Priority: Major
> Attachments: image-2018-10-26-10-23-48-101.png,
> image-2018-10-26-10-24-16-669.png, image-2018-10-26-10-24-54-904.png,
> image-2018-10-26-10-26-00-591.png, image-2018-10-26-10-27-32-291.png
>
>
> I am using CDH open source version 5.15.0, where the Hive version is 1.1.0.
> I have 3 Metastore services and 3 HiveServer2 services in the cluster,
> Metastore and HiveServer2 don't currently have HA turned on. The cluster
> opens the Sentry service and configures the Hive Auxiliary JARs Directory
> attribute.
> Now I am having a problem, I am using beeline to connect to HiveServer2 on
> node 1 to create a function that is successful and can be queried normally.
> But if I now connect to HiveServer2 of node 2 via Beeline, I can't see the
> function I just created on node 1 through _show function_. I have to restart
> HiveServer2 or use _reload function_ command on node 2 to see the function
> created on node 1 just now.
> Is there a way to implement the function that I can create on any node? I
> don't know the reason and solution for this problem, I hope I can get help,
> thank you!
>
> exp:
> connect dn1.test.com:10000 to create function _zzytest_trans_ , use _show
> functions_ I can see it
> !image-2018-10-26-10-24-16-669.png!
> !image-2018-10-26-10-24-54-904.png!
>
> At this point I used beeline to connect to dn4.test.com:10000 and use the
> show functions command to view the function and I can't find the
> zzytest_trans function. I have to restart HiveServer2 or use _reload
> function_ command on the dn4.test.com node to see the zzytest_trans function.
> !image-2018-10-26-10-26-00-591.png!
> !image-2018-10-26-10-27-32-291.png!
>
>
>
>
>
>
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
