[HDFS-3184] Add public HDFS client API

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: hdfs-client
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 03/Apr/12 19:10
• Updated: 06/Aug/15 05:02

Description

There are some useful operations in HDFS but not in the FileSystem API; see a list in Uma's comment. These operations should be made available to the public.

Issue Links

• is related to: HDFS-1599 Umbrella Jira for Improving HBASE support in HDFS
• relates to: HBASE-5830 Cleanup SequenceFileLogWriter to use syncFs api from SequenceFile#Writer directly in trunk.

Sub-Tasks

• Add HdfsDataInputStream as a public API: Closed
• Remove the deprecated DistributedFileSystem.DiskStatus and the related methods: Resolved
• Add HdfsDataOutputStream as a public API: Closed
• Add public waitOnSafeMode API with HdfsUtils: Resolved
• Update file context to use HdfsDataInputStream and HdfsDataOutputStream: Closed
• Deprecate the admin methods in DistributedFileSystem and add them to HdfsAdmin: Open
• Provide an API for knowing that whether file is closed or not.: Closed