Hi all :
My HMC node failed with “JSON Parse failed” , it is caused by AC 110V power suddenly lost last night.
so I reboot my hadoop cluster (5 nodes)this morning,and hope it can come to live again.
Unfortunately I found my HMC web page with “JSON Parse failed”
I have no idea about how to fix ” JSON Parse failed” ,so I chose to “remove hmc and install hmc” then,
” # yum remove hmc ;
#yum install hmc ;
#service hmc start ,”
I found my HMC web page went to Hortonworks Welcome page
“Welcome to Hortonworks Management Center ” with a button labeled “get started”
that is a sign of install new cluster.
I did not mean to reinstall all the cluster , instead, I just want to fix my HMC due to my HMC got stuck with “JSON Parse failed” that is caused by suddenly power loast last night.
Anybody know how to safely recover my HMC without having to reinstall a new cluster?
Any method to fix HMC without reinstalling the hadoop cluster if HMC fail again with some cause in the future?