Known Issues in HDFS

Learn about the known issues in HDFS, the impact or changes to the functionality, and the workaround.

Unsupported Features

The following HDFS features are currently not supported in Cloudera Data Platform:

• ACLs for the NFS gateway (HADOOP-11004)
• Aliyun Cloud Connector (HADOOP-12756)
• Allow HDFS block replicas to be provided by an external storage system (HDFS-9806)
• Consistent standby Serving reads (HDFS-12943)
• Cost-Based RPC FairCallQueue (HDFS-14403)
• HDFS Router Based Federation (HDFS-10467)
• More than two NameNodes (HDFS-6440)
• NameNode Federation (HDFS-1052)
• NameNode Port-based Selective Encryption (HDFS-13541)
• Non-Volatile Storage Class Memory (SCM) in HDFS Cache Directives (HDFS-13762)
• OpenStack Swift (HADOOP-8545)
• SFTP FileSystem (HADOOP-5732)
• Storage policy satisfier (HDFS-10285)