[HDFS-6843] Create FileStatus isEncrypted() method

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.6.0
• Component/s: namenode, security
• Target Version/s: 2.6.0
• Assignee: Charles Lamb
• Reporter: Charles Lamb
• Created: 12/Aug/14 17:42
• Updated: 23/Mar/17 18:07
• Resolved: 17/Sep/14 20:19

Description

FileStatus should have a 'boolean isEncrypted()' method. (it was in the context of discussing with AndreW about FileStatus being a Writable).

Having this method would allow MR JobSubmitter do the following:

---

BOOLEAN intermediateEncryption = false
IF jobconf.contains("mr.intermidate.encryption") THEN
intermediateEncryption = jobConf.getBoolean("mr.intermidate.encryption")
ELSE
IF (I/O)Format INSTANCEOF File(I/O)Format THEN
intermediateEncryption = ANY File(I/O)Format HAS a Path with status isEncrypted()==TRUE
FI
jobConf.setBoolean("mr.intermidate.encryption", intermediateEncryption)
FI

Issue Links

• is depended upon by: HDFS-7047 Expose FileStatus#isEncrypted in libhdfs
• is depended upon by: HADOOP-14223 Extend FileStatus#toString() to include details like Erasure Coding and Encryption
• is related to: HADOOP-11026 add FileSystem contract specification for FSDataInputStream and FSDataOutputStream#isEncrypted