Running Solr on HDFS | Apache Solr Reference Guide 6.6Solr has support for writing and reading its index and transaction log files to the HDFS distributed filesystem. This does not use Hadoop MapReduce to process Solr data, rather it only uses the HDFS filesystem for index and transaction log file storage. To use Hadoop MapReduce to process Solr data, see the MapReduceIndexerTool in the Solr contrib area. To use HDFS rather than a local filesystem, y
