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Help Center/ MapReduce Service/ Component Operation Guide (Normal)/ Using HBase/ Common Issues About HBase/ When Will the" Dead Region Servers" Information Displayed on the HMaster Web UI Be Cleared After a RegionServer Is Stopped?

When Will the" Dead Region Servers" Information Displayed on the HMaster Web UI Be Cleared After a RegionServer Is Stopped?

Updated on 2024-12-11 GMT+08:00

Question

When will RegionServers in the Dead Region Servers state be cleared on the HMaster Web UI?

Answer

If a RegionServer stops suddenly, it enters the Dead Region Servers state on the HMaster web UI. When the stopped RegionServer restarts and reports a success message to HMaster, the "Dead Region Servers" information disappears from HMaster web UI.

If the HMaster active/standby switchover is successful, the "Dead Region Servers" information will also be deleted from the HMaster web UI.

If the active HMaster in some regions stops responding, the standby HMaster becomes active and the previous active HMaster becomes a dead RegionServer. If the HMaster active/standby switchover is successful, the "Dead Region Servers" information will also be deleted from the HMaster web UI.

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