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MAPREDUCE2 History Server Web UI Connection Failed

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MAPREDUCE2 History Server Web UI Connection Failed

New Contributor

Hi All,


We have been receiving alerts everyday from MapReduce History Server Web UI encountered connection failed or operation timeout.

As checked, History Server application didn't stop or restarted during the time of the alert.


Here's the sample logs:

History Server Web UI

Connection failed to http://<host>:19888 (Execution of 'curl --location-trusted -k --negotiate -u : -b /var/lib/ambari-agent/tmp/cookies/42d9b918-9117-4548-b4e1-95e9c1c2ae5e -c /var/lib/ambari-agent/tmp/cookies/42d9b918-9117-4548-b4e1-95e9c1c2ae5e -w '%{http_code}' http://<host>:19888 --connect-timeout 5 --max-time 7 -o /dev/null 1>/tmp/tmpRrgc73 2>/tmp/tmpou2bCs' returned 28. % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:01 --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:02 --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:02 --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:03 --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:04 --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:06 --:--:-- 0 0 0 0 0 0 0 0 0 --:--:-- 0:00:07 --:--:-- 0 curl: (28) Operation timed out after 7000 milliseconds with 0 out of -1 bytes received 302)

Cluster: Name

Host: host


Any thoughts on why this keeps happening?


Thank you!

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