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Date: Tue, 30 Oct 2012 08:20:12 +0000 (UTC)
From: "Po Rui (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <390503674.43647.1351585212189.JavaMail.jiratomcat@arcas>
Subject: [jira] [Created] (SOLR-4015) the collection create AIP may create a
 collection that user not expected when the solr-nodes number less than the
 request collection's replicas number
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Po Rui created SOLR-4015:
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             Summary: the collection create AIP may create a collection that user not expected when the solr-nodes number less than the request collection's replicas number 
                 Key: SOLR-4015
                 URL: https://issues.apache.org/jira/browse/SOLR-4015
             Project: Solr
          Issue Type: Bug
    Affects Versions: 4.0, 4.0-BETA
            Reporter: Po Rui
             Fix For: 4.0, 4.0-BETA


the collection create AIP may create a collection that user not expected when the solr-nodes number less than the request collection's replicas number.EX. the cluster have 5 avalaible solr-nodes. than user want create a collection with API param "numShards=2&numReplicas=2". this will lead to a collection contained 2 shards but one own 2 replicas and another own 1 replica. More serious, this will lead a collection loss one shard while the API param is "numShards=3&numReplicas=2". this will confuse the user. this incomplete collection will confuse the user. so we should discard the  colletion create action while the numLivedNode < numShards * (numReplicas + 1)

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