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From "Jens Bo Rasmussen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-3420) Data is not replicated from replica slices to leader slices
Date Fri, 27 Apr 2012 12:29:49 GMT
Jens Bo Rasmussen created SOLR-3420:
---------------------------------------

             Summary: Data is not replicated from replica slices to leader slices
                 Key: SOLR-3420
                 URL: https://issues.apache.org/jira/browse/SOLR-3420
             Project: Solr
          Issue Type: Bug
          Components: replication (java)
    Affects Versions: 4.0
         Environment: Linux 2.6.32-29-server #58-Ubuntu SMP Fri Feb 11 21:06:51 UTC 2011 x86_64
GNU/Linux, Solr snapshot from 29th of February 2012, 2 Solr machines with 1 slice each and
1 replica
            Reporter: Jens Bo Rasmussen
             Fix For: 4.1


Scenario: ensure that data is not lost when leader slices and replica slices switch roles
due to an untimely restart of both nodes
Given a SolrCloud cluster is running with
number of nodes: 2
number of slices per node: 1
number of documents in leader slice1_shard1 on first Solr node: 1
number of documents in replica slice1_shard2 on second Solr node: 1
number of documents in leader slice2_shard1 on first Solr node: 1
number of documents in replica slice2_shard2 on second Solr node: 1
And the second node is stopped
And x new documents are added to the first node with leader slices
And the first node with leader slices is stopped
When the second node with replica slices is started and the replica slices become leader slices
And the first node with leader slices is started and the leader slices become replica slices
Then I would expect that the SolrCloud cluster is running with
number of nodes: 2
number of slices per node: 1
number of documents in replica slice1_shard1 on first Solr node: 1+x
number of documents in leader slice1_shard2 on second Solr node: 1+x
number of documents in replica slice2_shard1 on first Solr node: 1+x
number of documents in leader slice2_shard2 on second Solr node: 1+x

Testresult: data is not replicated
number of servers (Solr nodes): 2
number of slices per node: 1
number of replica per slice: 1
number of documents in replica slice1_shard1 on first Solr node: 1+x
number of documents in leader slice1_shard2 on second Solr node: 1
number of documents in replica slice2_shard1 on first Solr node: 1+x
number of documents in leader slice2_shard2 on second Solr node: 1

==> data is not replicated from replica slices to leader slices

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