hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From lars hofhansl <lhofha...@yahoo.com>
Subject Re: Insert blocked
Date Tue, 24 Jul 2012 05:29:38 GMT
Or you can pre-create your HConnection and Threadpool and use the HTable constructor that takes
these as arguments.
That is faster and less "byzantine" compared to the HTablePool "monster".

Also see here (if you don't mind the plug): http://hadoop-hbase.blogspot.com/2011/12/long-running-hbase-clients.html

-- Lars

----- Original Message -----
From: Elliott Clark <eclark@stumbleupon.com>
To: user@hbase.apache.org
Sent: Monday, July 23, 2012 3:54 PM
Subject: Re: Insert blocked

HTable is not thread safe[1]. It's better to use HTablePool if you want to
share things across multiple threads.[2]

1 http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/HTable.html

On Mon, Jul 23, 2012 at 3:48 PM, Mohit Anchlia <mohitanchlia@gmail.com>wrote:

> I am writing a stress tool to test my specific use case. In my current
> implementation HTable is a global static variable that I initialize just
> once and use it accross multiple threads. Is this ok?
> My row key consists of (timestamp - (timestamp % 1000)) and cols are
> counters. What I am seeing is that when I run my test after first row is
> created the application just hangs. I just wanted to check if there are
> obvious things that I should watch out for.
> I am currently testing few threads in eclipse, but I'll still try and
> generate stackTrace

View raw message