Add internal status monitoring to RegionServer
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Key: HBASE-1964
URL: https://issues.apache.org/jira/browse/HBASE-1964
Project: Hadoop HBase
Issue Type: Improvement
Components: client
Affects Versions: 0.20.1
Reporter: elsif
When a hadoop/hbase cluster is under heavy load it will inevitably reach a
tipping point where data is lost or corrupted. A
graceful method is needed to put the cluster into safe mode until more
resources can be added or the load on the cluster has been
reduced.
St.Ack has suggested the following short-term task: "Meantime, it should be
possible to have a cron run a script that checks
cluster resources from time-to-time -- e.g. how full hdfs is, how much each
regionserver is carrying -- and when it determines the needle is in the red,
flip the cluster to be read-only."
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