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From 王锋 <>
Subject Re:Re: Re: hive cann't support setting queryTimeout
Date Mon, 26 Mar 2012 08:21:22 GMT
thanks for Pawar. the metadata store is fine and it was in our mysql safe plateform. When I
restart the hiveserver ,it 's ok. but when the hiveserver occurred the question,it has been
running about one week, and the mem is about 5g . so I agree 1).

If the large mem of hive cause the question, I need tuning the gc arguments?

At 2012-03-26 16:05:51,"Nitin Pawar" <> wrote:

can you check the logs on hiveserver? 

Is your metadata store working fine? Cause this issue comes only if there is a lag with metadata
store or hiveserver is overly loaded. 

1) are there any queries running in hiveserver? if yes .. then what is memory status of the
2) Also check if the metadata store for hive is working fine?

I suspect the first cause we have seen that when there are multiple queries running on query
server it takes a lot of time to response. 


In hive you can not set a query timeout but with jdbc you can set a connection timeout but
still that does not solve the problem you are facing 

On Mon, Mar 26, 2012 at 12:57 PM, 王锋 <> wrote:

ya,this morning,we see a serious question. when our system send sql "CREATE DATABASE IF NOT
EXISTS dbname" to hiveserver through jdbc, the result had not been returned after several
hours. And this is the second time.

是的。 今天凌晨 系统遇到一个问题, 执行 CREATE DATABASE IF NOT EXISTS dbname时,hiveserver
一直没有返回。 不知有没有人碰到过.这是第二次碰到了.

在 2012-03-26 15:18:51,badqiu <> 写道:

hive jdbc里面还有好多方法没有实现。具体自己查看源代码吧。

在 2012年3月26日 下午3:15,王锋 <>写道:

when I using hive through jdbc,and execute the code below.

Statement stmt = con.createStatement();

hive thrown the exception "Method not support." so how can I set the query timeout like
using mysql?
And is this an issue for hive?


Nitin Pawar

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