Updated on 2026-06-27 GMT+08:00
YARN Troubleshooting
This section describes common YARN faults and troubleshooting methods.
- Job errors
- An Error Is Reported When a YARN Client Command Is Used to Query Historical Jobs
- A Large Number of Jobs Occupying Resources After YARN Is Started in a Cluster
- Temporary Files Are Not Deleted When a MapReduce Job Is Abnormal
- Error "GC overhead" Is Reported When Tasks Are Submitted Using the hadoop jar Command on the Client
- Incorrect Port Information of the YARN Client Causes Error "connection refused" After a Task Is Submitted
- YARN web UI errors
- Other errors
Parent topic: Using YARN
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