Packages 
Package Description
org.apache.solr.hdfs
HDFS implementation.
org.apache.solr.hdfs.backup.repository
An HDFS backup repository implementation.
org.apache.solr.hdfs.index
An HDFS CheckIndex implementation.
org.apache.solr.hdfs.snapshots
An HDFS snapshot implementation.
org.apache.solr.hdfs.store
An HDFS Directory implementation.
org.apache.solr.hdfs.store.blockcache
An HDFS blockcache implementation.
org.apache.solr.hdfs.update
An HDFS update log and transaction log implementation.
org.apache.solr.hdfs.util
An HDFS util implementation.