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https://issues.apache.org/jira/browse/SOLR-5308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13792692#comment-13792692
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Shalin Shekhar Mangar commented on SOLR-5308:
---------------------------------------------
For splitting a single source shard into a single target collection/shard by a
route key such as:
{code}
/admin/collections?action=migrate&collection=collection1&split.key=A!&shard=shardX&target.collection=collection2&target.shard=shardY
{code}
A rough strategy could be to:
# Create new core X on source
# Create new core Y on target
# Ask target core to buffer updates
# Start forwarding updates for route key received by source shard to target
collection
# Split source shard to a new core X
# Ask Y to replicate fully from X
# Core Admin merge Y to target core
# Ask target core to replay buffer updates
> Split all documents of a route key into another collection
> ----------------------------------------------------------
>
> Key: SOLR-5308
> URL: https://issues.apache.org/jira/browse/SOLR-5308
> Project: Solr
> Issue Type: New Feature
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Fix For: 4.6, 5.0
>
>
> Enable SolrCloud users to split out a set of documents from a source
> collection into another collection.
> This will be useful in multi-tenant environments. This feature will make it
> possible to split a tenant out of a collection and put them into their own
> collection which can be scaled separately.
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