Details
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Bug
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Status: Open
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Normal
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Resolution: Unresolved
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None
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RHEL 6.6 64 bits
Cassandra 2.2.6 with replication factor of 2
2 servers in the Cassandra ring.
One server is down for maintenance for more than 24 hours
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Normal
Description
VitualMachine 1 : application server + Cassandra 1
VirtualMachine 2: application server + Cassandra 2
Cassandra1 and Cassandra2 are the only members of the Cassandra ring.
I expect Cassandra to always be synchronized as soon as VM1 and Vm2 can communicate.
Applicaiton server (AS1) of VM1 writes a value to Cassandra (a date).
VM1 is shot down.
VM2 reads the value written by AS1 as expected.
Cassandra of VM2 perform a flush operation.
VM2 reads the value older than the exp
ected one, the last value written by AS1.
I've lost the last inserted data, and I don't understand why.
In attached log bcs.log the read in DB:
2.4.0.1-SNAPSHOT - LCL - 26 Jun 2017 07:15:47,959 INFO [RMI TCP Connection(111)-172.25.153.163] - Cassandra supervisor : check OK : last generation of CDR is : Sun Jun 25 00:10:53 CEST 2017
2.4.0.1-SNAPSHOT - LCL - 26 Jun 2017 07:16:47,963 INFO [RMI TCP Connection(113)-172.25.153.163] - Cassandra supervisor : check OK : last generation of CDR is : Thu Jun 22 07:16:10 CEST 2017
Nothing has been inserted in database between the 2 logs but in debug.log from Cassandra I can see a flush operation the 2017-06-24 at 07:16:37,056.
What did we miss ?
How data can be overwritten ?
Regards,
Hervé