Database Reference
In-Depth Information
Table 3.2
Default Ports Used by MapReduce
Service
Servers
Default
Ports
Used
Protocol Description
JobTracker
web UI
Master nodes
(JobTracker node
and any backup
JobTracker node )
50030 HTTP
Web UI for
JobTracker
JobTracker
Master nodes
(JobTracker node)
8021
IPC
For job
submissions
TaskTracker
web UI and
shuffle
All slave nodes
50060 HTTP
DataNode
web UI to
access status,
logs, and so
on
History
server web
UI
51111
HTTP
Web UI for
job history
