Hi we are seeing an issue with our Cloudera setup. We have multiple data nodes and on each node we have phoenix set up to query on HBase tables.
What we have observed is that when one of the region server is going through Garbage collection (GC cycle) it becomes unavailable. Due to this unavailability of 1 region server, our entire cluster is becoming unavailable and phoenix is not able to connect to HBase and query the tables.
We have around 40 region servers like that. When we restart that region server, things comes back to normal and the phoenix can query the tables. Are we missing any specific configuration that will avoid blocking of all the region servers if one of them is not available.
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Source : Link , Question Author : chandresh_cool , Answer Author : Community
