SOLR-5442: Move CHANGES entry to 4.6.1
SOLR-5445: Move CHANGES entry to 4.6.1

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SOLR-5479: Move CHANGES entry to 4.6.1

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SOLR-5532: Move CHANGES entry to 4.6.1

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SOLR-5576: Move CHANGES to 4.6.1

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SOLR-5580: NPE when creating a core with both explicit shard and coreNodeName.

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SOLR-5552: Add CHANGES entry
SOLR-5569: Add CHANGES entry
SOLR-5568: Add CHANGES entry

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SOLR-5547: Move CHANGES entry to 4.6.1

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SOLR-5577: Don't start a timer on disconnect if we are already closed

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SOLR-5496: Move CHANGES to 4.6.1

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SOLR-5583: ConcurrentUpdateSolrServer#blockUntilFinished may wait forever if the executor service is shutdown.

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tests: raise connect timeout from 15 to 30

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tests: remove so timeout

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tests: improve this test

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SOLR-5586: All ZkCmdExecutor's should be initialized with the zk client timeout

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tests: some nightly tests need solr.hdfs.home - just always set it

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when sending a non retry update fails, log it at warn level

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tests: raise timeouts for nightly runs

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SOLR-5587: ElectionContext implementations should use ZkCmdExecutor#ensureExists to ensure their election paths are properly created.

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SOLR-4709: Move CHANGES to 4.6.1

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SOLR-5503: Move CHANGES entry to 4.6.1

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