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From Hanifi Gunes <hgu...@maprtech.com>
Subject Re: Drill 0.9 slowness/hanging
Date Mon, 11 May 2015 22:57:15 GMT
Can you confirm if this happens even when the particular 0.9 bit is idle?

-Hanifi

On Mon, May 11, 2015 at 3:53 PM, Minnow Noir <minnownoir@gmail.com> wrote:

> Experiencing some slowness after upgrading one of our servers from 0.8 to
> 0.9.  In particular, despite restarting the Drillbit, and even the server,
> several times, the Drill web UI and sqlline are both so slow as to be
> unusable.
>
> For example, doing a show databases hangs indefinitely, until I CTRL-C the
> command (e.g., after a minute).
>
>  show databases;
> +-------------+
> | SCHEMA_NAME |
> +-------------+
> | INFORMATION_SCHEMA |
> | cp.default  |
> | dfs.default |
> | dfs.root    |
> | dfs.tmp     |
> | test.default |
> | test.schema1 |
> | sys         |
> +-------------+
> 8 rows selected (59.044 seconds)
>
> I tried changing schemas, but had to cancel after waiting several minutes.
>
>  use test.schema1;
> +------------+------------+
> |     ok     |  summary   |
> +------------+------------+
> | true       | Default schema changed to 'test.schema1' |
> +------------+------------+
> 1 row selected (208.089 seconds)
>
> There are no errors or obvious issues in the logs. The server has plenty of
> disk, CPU, and RAM free.  It's running a recent version of MAPR Hadoop on
> CentOS 6.5 on EC2.  It feels like something is hanging
>
> Note: This is just after starting sqlline; no actual work, which might have
> slowed things down, has happened yet.
>
> This is what's running from a Drill perspective:
>
>  ps aux | grep drill
> ec2-user 24662  0.0  0.0 106100  1328 pts/0    S    12:29   0:00 bash
> bin/drillbit.sh internal_start drillbit
> ec2-user 24697  0.3  2.3 6486240 730568 pts/0  Sl   12:29   0:36
> /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.79.x86_64/bin/java
> -Dlog.path=/opt/mapr/drill/drill-0.9.0/logs/drillbit.log -Xms1G -Xmx4G
> -XX:MaxDirectMemorySize=8G -XX:MaxPermSize=512M
> -XX:ReservedCodeCacheSize=1G -ea
> -Djava.security.auth.login.config=/opt/mapr/conf/mapr.login.conf
> -Dzookeeper.sasl.client=false -XX:+CMSClassUnloadingEnabled
> -XX:+UseConcMarkSweepGC -cp
>
> /opt/mapr/drill/drill-0.9.0/conf:/opt/mapr/drill/drill-0.9.0/jars/*:/opt/mapr/drill/drill-0.9.0/jars/ext/*:/opt/mapr/drill/drill-0.9.0/jars/3rdparty/*:/opt/mapr/drill/drill-0.9.0/jars/classb/*
> org.apache.drill.exec.server.Drillbit
>
> Drill has been started thusly:
>
> bin/sqlline -u jdbc:drill:zk=theServer:5181
>
> Any idea how I could troubleshoot this?
>
> Anyone else experiencing slowness after upgrading?
>
> Thank you
>

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