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http://jira.amdatu.org/jira/browse/AMDATU-254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=10661#comment-10661
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Ivo Ladage - van Doorn commented on AMDATU-254:
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I'm running out of options, what I tried till now;
- Running two nodes on same OS exactly as described on the riptano site, see
http://www.riptano.com/docs/0.7/getting_started/index
- Enabled autobootstrap as described on "Adding capacity" in
http://www.riptano.com/docs/0.7/operations/clustering
- Disabled adding keyspaces/CF's when a node runs on auto bootstrap mode
- Read all riptano/cassandra documentation looking for any possible causes
- Used nodetool to evaluate ring topology and setup; nothing seems to be wrong
- Enabled JMX and used JConsole to flush/compact/cleanup/invalidate any cache I
could find for which an MBean exists -> no effect on the problem
- Added gadget that uses the Hector API instead of Thrift API to retrieve rows
-> an OutOfMemoryError is thrown as soon as i start using Hector
- Tried using cassandra-cli to connect to the cassandra node and find out
what's wrong -> exactly the same OutOfMemoryError is thrown
- Googled for the OutOfMemoryError problem, only answer seems to be that the
Thrift API should not be used directly. cassandra-cli however is distributed
along with cassandra, so that should have worked anyway. Furthermore, I tried
using the Hector API as suggested but that runs into the exact same error
> When a new cassandra node comes available in the cluster, random data is
> removed from the Role ColumnFamily
> -----------------------------------------------------------------------------------------------------------
>
> Key: AMDATU-254
> URL: http://jira.amdatu.org/jira/browse/AMDATU-254
> Project: Amdatu
> Issue Type: Bug
> Components: Amdatu Cassandra
> Affects Versions: 0.1.0
> Reporter: Ivo Ladage - van Doorn
> Assignee: Ivo Ladage - van Doorn
> Fix For: 0.1.0
>
>
> The following use case causes random data to disappear from the cassandra
> storage:
> - Start a node in the cassandra cluster with replication factor 1
> - Start another node in the cassandra cluste, also with replication factor 1
> Now apparently, bringing up the second node in the cluster causes random data
> to be removed from the Role ColumnFamily. After bringing up the first node,
> these are the row keys available in the CF 'Role';
> (1) user_marior
> (2) user_janed
> (3) group_Parent
> (4) user_melissad
> (5) group_Student
> (6) group_Administrators
> (7) user_georged
> (8) user_tedb
> (9) group_Teacher
> (10) user_elisad
> (11) user_Administrator
> (12) user_maijam
> (13) user_johnd
> After booting the second node, random data disappeared:
> (1) user_marior
> (2) group_Teacher
> (3) user_elisad
> (4) user_Administrator
> (5) user_maijam
> (6) user_johnd
> the result is different every time you try it. Also, when I stop node 2,
> clean its cassandra database and start it again, more data is missing.
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