[MAPREDUCE-6988] Let JHS support different file systems for intermediate_done and done

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.7.4
• Component/s: jobhistoryserver
• Target Version/s: 2.8.1
• Assignee: Unassigned
• Reporter: Johan Gustavsson
• Created: 23/Oct/17 08:46
• Updated: 05/Jan/18 01:54

Description

Currently JHS uses filecontext to move files from intermediate_done to done folder. Since filecontext limits the use to 1 filesystem it makes it harder to use s3 as a storage for jhist files. By moving this to filesystem interface we can set hdfs for intermediate storage and s3 as long term storage therefore reducing the number of puts to s3 and removing the need for all M/R containers to carry a s3 sdk.