default void postMemStoreCompaction(ObserverContext<? extends RegionCoprocessorEnvironment> c,
    Store store) throws IOException {
  }
Called after the in memory compaction is finished.
@param c     the environment provided by the region server
@param store the store where in memory compaction is being executed
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java