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From "Vladimir Yudovin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13079) Repair doesn't work after several replication factor changes
Date Sat, 24 Dec 2016 14:20:58 GMT
Vladimir Yudovin created CASSANDRA-13079:
--------------------------------------------

             Summary: Repair doesn't work after several replication factor changes
                 Key: CASSANDRA-13079
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13079
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: Debian 
            Reporter: Vladimir Yudovin
            Priority: Critical


Scenario:
Start two nodes cluster.

Create keyspace with rep.factor *one*:
CREATE KEYSPACE rep WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1};
CREATE TABLE rep.data (str text PRIMARY KEY );
INSERT INTO rep.data (str) VALUES ( 'qwerty');

Run *nodetool flush* on all nodes. On one of them table files are created.

Change replication factor to *two*:
ALTER KEYSPACE rep WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 2};

Run repair, then *nodetool flush* on all nodes. On all nodes table files are created.

Change replication factor to *one*:
ALTER KEYSPACE rep WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1};

Then *nodetool cleanup*, only on initial node remained data files.

Change replication factor to *two* again:
ALTER KEYSPACE rep WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 2};

Run repair, then *nodetool flush* on all nodes. No data files on second node (though expected,
as after first repair/flush).



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