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From "Christine Poerschke (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-5209) cores/action=UNLOAD of last replica removes shard from clusterstate
Date Mon, 02 Sep 2013 17:17:51 GMT
Christine Poerschke created SOLR-5209:
-----------------------------------------

             Summary: cores/action=UNLOAD of last replica removes shard from clusterstate
                 Key: SOLR-5209
                 URL: https://issues.apache.org/jira/browse/SOLR-5209
             Project: Solr
          Issue Type: Bug
          Components: SolrCloud
    Affects Versions: 4.4
            Reporter: Christine Poerschke


The problem we saw was that unloading of an only replica of a shard deleted that shard's info
from the clusterstate. Once it was gone then there was no easy way to re-create the shard
(other than dropping and re-creating the whole collection's state).

This seems like a bug?

Overseer.java around line 600 has a comment and commented out code:
// TODO TODO TODO!!! if there are no replicas left for the slice, and the slice has no hash
range, remove it
// if (newReplicas.size() == 0 && slice.getRange() == null) {
// if there are no replicas left for the slice remove it


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