LUCENE-5414: intellij config

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1561707 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5671: increase logging to try and track down test failure

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1561709 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5666: Using the hdfs write cache can result in appearance of corrupted index.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1561751 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' into docblocksiter
Join module tests pass