Shalin Shekhar Mangar created SOLR-5324:
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Summary: Make sub shard replica recovery and shard state switch
asynchronous
Key: SOLR-5324
URL: https://issues.apache.org/jira/browse/SOLR-5324
Project: Solr
Issue Type: Improvement
Components: SolrCloud
Reporter: Shalin Shekhar Mangar
Assignee: Shalin Shekhar Mangar
Fix For: 5.0, 4.6
Currently the shard split command waits for all replicas of all sub shards to
recover and then switches the state of parent to inactive and sub-shards to
active.
The problem is that shard split (ab)uses the CoreAdmin WaitForState action to
ask the sub shard leader to wait until the replica states are active. This
action is prone to timeout.
We should make the shard state switching asynchronous. Once all replicas of all
sub-shards are 'active', the shard states should be switched automatically.
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