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https://issues.apache.org/jira/browse/SOLR-5300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13802623#comment-13802623
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Shalin Shekhar Mangar commented on SOLR-5300:
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bq. should we also check that the supplied sub-ranges actually covers the
entire range of the shard?
Yes, you are right. I'll fix.
> Split shards with custom hash ranges
> ------------------------------------
>
> Key: SOLR-5300
> URL: https://issues.apache.org/jira/browse/SOLR-5300
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Fix For: 4.6, 5.0
>
> Attachments: SOLR-5300.patch, SOLR-5300.patch
>
>
> Currently, shards can only be split at the mid point of their hash range.
> This makes it difficult to control the distribution of data in the sub shards.
> We should make it possible to specify ranges to be used for splitting. A
> ranges parameter can be added which can accept hash ranges in hexadecimal
> e.g. ranges=0-1f4,1f5-3e8,3e9-5dc will split a shard with range 0-1500 into
> three shards with ranges [0,500], [501-1000] and [1001-1500] respectively.
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