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https://issues.apache.org/jira/browse/SOLR-4682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13624347#comment-13624347
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Shalin Shekhar Mangar commented on SOLR-4682:
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Ok, I see that code is in the class CoreAdminRequest.MergeIndexes. I'll fix.
> CoreAdminRequest.mergeIndexes can not merge mutilple cores.
> -----------------------------------------------------------
>
> Key: SOLR-4682
> URL: https://issues.apache.org/jira/browse/SOLR-4682
> Project: Solr
> Issue Type: Bug
> Components: clients - java
> Affects Versions: 4.2
> Environment: java version "1.6.0_20"
> Reporter: Jason.D.Cao
> Labels: patch
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> The mergeIndexes method in CoreAdminRequest class accepts an array of
> srcCores, but it only merge the last core of array into targetCore. Related
> code as follows,
> if (srcCores != null) {
> for (String srcCore : srcCores) {
> params.set(CoreAdminParams.SRC_CORE, srcCore);
> }
> }
> The for-each loop above overrides the SRC_CORE value in params and only the
> last one reserved when loop ends.
> We should remove the for-each loop and set SRC_CORE value with an array of
> srcCores.
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