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From "Shalin Shekhar Mangar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-11082) MoveReplica API for shared file systems should not delete the old replica if the source node is not live
Date Fri, 14 Jul 2017 08:26:04 GMT
Shalin Shekhar Mangar created SOLR-11082:
--------------------------------------------

             Summary: MoveReplica API for shared file systems should not delete the old replica
if the source node is not live
                 Key: SOLR-11082
                 URL: https://issues.apache.org/jira/browse/SOLR-11082
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: hdfs, SolrCloud
            Reporter: Shalin Shekhar Mangar
             Fix For: 7.1


MoveReplica API for shared file systems attempts to delete the old replica and then creates
a new replica (with same core and coreNode name) on the target node. If the overseer fails
between the two operations then the replica is lost. The API should detect that if the source
is not live, it only needs to create the new replica. Then the old replica (upon coming back
online) auto-detects a replacement and unloads itself. This is also how OverseerAutoReplicaFailoverThread
works today.



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