Shalin Shekhar Mangar created SOLR-5353:
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Summary: Enhance CoreAdmin api to split a route key's documents
from an index
Key: SOLR-5353
URL: https://issues.apache.org/jira/browse/SOLR-5353
Project: Solr
Issue Type: Sub-task
Components: SolrCloud
Reporter: Shalin Shekhar Mangar
Assignee: Shalin Shekhar Mangar
Priority: Minor
Fix For: 4.6, 5.0
Allow a split key to be passed in to CoreAdmin SPLIT action so that we can
split only a particular route key's documents out of the index.
e.g. consider an index containing documents belonging to two route keys with
hash ranges A!=[12,15] and B!=[13,17]. We want to split all documents having
route key 'A!' while leaving behind any documents having route key 'B!' even
though some documents with 'B!' fall into the hash range of 'A!'
This is different from what was achieved in SOLR-5338 because that issue splits
all documents belonging to the hash range of a given route key. Since multiple
keys can have overlapping hash range and we were splitting into the same
collection, we had no choice but to move all documents belonging to the hash
range into the new shard.
In this particular issue, we are trying to migrate documents to a different
collection and therefore we can leave documents having other route keys behind.
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