[ 
https://issues.apache.org/jira/browse/SOLR-11990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16604259#comment-16604259
 ] 

ASF subversion and git services commented on SOLR-11990:
--------------------------------------------------------

Commit e03dabb742bc81f071a7941c330a437610860abd in lucene-solr's branch 
refs/heads/branch_7x from [~shalinmangar]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=e03dabb ]

SOLR-11990: Wait for all nodes to be live before running tests.

A few tests have failed on jenkins where the very first call to Solr to set the 
policy fails because no live nodes were found. This commit adds a 30 second 
(max) wait for nodes to be registered live in ZK before attempting to run any 
test.

(cherry picked from commit df20c4b9e6f9ff3408c7eaf9ceea7a1656a72ff8)


> Make it possible to co-locate replicas of multiple collections together in a 
> node
> ---------------------------------------------------------------------------------
>
>                 Key: SOLR-11990
>                 URL: https://issues.apache.org/jira/browse/SOLR-11990
>             Project: Solr
>          Issue Type: New Feature
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: AutoScaling, SolrCloud
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Shalin Shekhar Mangar
>            Priority: Major
>             Fix For: master (8.0), 7.5
>
>         Attachments: 
> SOLR-11990-TestWithCollection-testDeleteWithCollection-fixes.patch, 
> SOLR-11990-fix.patch, SOLR-11990.patch, SOLR-11990.patch, SOLR-11990.patch, 
> SOLR-11990.patch, SOLR-11990.patch, SOLR-11990.patch, SOLR-11990.patch
>
>
> It is necessary to co-locate replicas of different collection together in a 
> node when cross-collection joins are performed.
> while creating a collection specify the parameter 
> {{withCollection=other-collection-name}} . This ensure that Solr always 
> ensure that atleast one replica of {{other-collection}} is present with this 
> collection replicas
> This requires changing create collection, create shard and add replica APIs 
> as well because we want a replica of collection A to be created first before 
> a replica of collection B is created so that join queries etc are always 
> possible.
> Some caveats to this implementation:
> # The {{other-collection}} should only have a single shard named "shard1"
> # Any replica of {{other-collection}} created by this feature will be of NRT 
> type
> Removing the above caveats can be a goal of other issues.



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