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From Tomer B <tomer...@gmail.com>
Subject losing connection to Cassandra
Date Thu, 24 Feb 2011 14:45:23 GMT
Hi

i'm using a 3 node cluster of cassandra 0.6.1 together with hector as api to
java client.

every few days I get a situation where I cannot connect to cassandra, other
than that the data dir is filling up the whole disk space and the
synchronization stops at these times, the exceptions I get are as following:

Happended 3386 in 24H: POOL EXHAUSTED: 02:00:30.225 [MyThread[5]]: Unable to
connect to cassandra node xxx.xx.xx.32:9160 will try the next node, Pool
exhausted

Happened 6848 in 24H CONNECTION REFUSED: 06:14:48.598 [MyThread[4]]: Unable
to connect to cassandra node xxx.xx.xx.30:9160 will try the next node,
Unable to open transport to xxx.xx.xx.30:9160 , java.net.ConnectException:
Connection refused: connect

Happened 84 times in 24H: NULL OUTPUTSTREAM: 06:14:48.504 [MyThread[2]]:
async execution fail, Cannot write to null outputStream

Happened 14 times in 24H: CONNECTION TIMED OUT: 06:15:08.019 [MyThread[0]]:
Unable to connect to cassandra node xxx.xx.xx.31:9160 will try the next
node, Unable to open transp ort to xxx.xx.xx.31:9160 ,
java.net.ConnectException: Connection timed out: connect

Can anyone assist or suggest what could be the problem? note that the node
is funcioning well and it happens once every few days.

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