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From i...@4friends.od.ua
Subject Re: One ColumnFamily places data on only 3 out of 4 nodes
Date Wed, 14 Dec 2011 14:58:55 GMT
No idea, try to check logs for errors, and increase verbosity level on that node.

 

-----Original Message-----
From: Bart Swedrowski <bart@timedout.org>
To: user@cassandra.apache.org
Sent: Wed, 14 Dec 2011 16:45
Subject: Re: One ColumnFamily places data on only 3 out of 4 nodes

On 14 December 2011 13:02, <igor@4friends.od.ua> wrote:

> Do you use randompartitiner? What nodetool getendpoints show for several
> random keys
>
Yes, randompartitioner it is.

Thanks for hint re 'nodetool getendpoints'.  I have queried few, and to my
surprise, 192.168.82.2 (node1) is showing up as a endpoint for few of them:

bart@node1:~$ nodetool -h localhost getendpoints A UserDetails 4547246
192.168.81.3
192.168.81.4
192.168.81.5
bart@node1:~$ nodetool -h localhost getendpoints A UserDetails 4549279
192.168.81.5
192.168.81.2
192.168.81.3
bart@node1:~$ nodetool -h localhost getendpoints A UserDetails 4549749
192.168.81.2
192.168.81.3
192.168.81.4
bart@node1:~$ nodetool -h localhost getendpoints A UserDetails 4545027
192.168.81.5
192.168.81.2
192.168.81.3

Any idea why the hell those are not stored on node1, though?

bart@node1:~$ nodetool -h localhost cfstats
[…]
Column Family: UserDetails
SSTable count: 0
 Space used (live): 0
Space used (total): 0
Number of Keys (estimate): 0
 Memtable Columns Count: 0
Memtable Data Size: 0
Memtable Switch Count: 0
 Read Count: 0
Read Latency: NaN ms.
Write Count: 0
 Write Latency: NaN ms.
Pending Tasks: 0
Key cache capacity: 200000
 Key cache size: 0
Key cache hit rate: NaN
Row cache: disabled
 Compacted row minimum size: 0
Compacted row maximum size: 0
Compacted row mean size: 0

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