-Re: HBase becomes ultra-slaggy
Asaf Mesika 2012-07-10, 04:47
I used it but I didn't like the fact that the graph was updating every
minute and sometimes every 5 minutes.
Sent from my iPhone
On 10 ביול 2012, at 06:57, Otis Gospodnetic <[EMAIL PROTECTED]>
Asaf - check the URL in my signature - it's a service for monitoring
various HBase metrics and may visually show you what is going on with
various parts of your 3 servers.
Performance Monitoring for Solr / ElasticSearch / HBase -
----- Original Message -----
From: Asaf Mesika <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: Monday, July 9, 2012 2:35 PM
Subject: HBase becomes ultra-slaggy
My cluster started being incredibly slow in the past 2 days.
I've seen many Blocking updates on the region server logs, which lead me to
believe HDFS creates is the bottleneck.
I ran a small test (hadoop fs -copyFromLocal big3_3Giga.tz.gz /tmp) which
a 3.3G file, and I was surprised to see a rate of 11MB/sec, when it was
previously around 28MB/sec.
I have 3 RS computers, hosting DataNode and embedded zookeeper as well.
And 1 Master computer, hosting NameNode as well.
The slowest computer has Core 2 Duo 2.93GHz, 4GB.
What steps can I take to find out the source of this slowdown?