Increase Ambari server cache size
Increase the Amabari Server cache size to accommodate a large number of hosts.
Calculate a new, larger cache size, using the following relationship:
ecCacheSizeValue=60*[CLUSTER_SIZE]Where [CLUSTER_SIZE] is the number of nodes in the cluster.
On the Ambari Server host, in
/etc/ambari-server/conf/ambari-properties, add the following
property and value:
server.ecCacheSize=[EC_CACHE_SIZE_VALUE]where [EC_CACHE_SIZE_VALUE] is the value calculated in the previous step, based on the number of nodes in the cluster.