@Override
    public synchronized void cancelCompaction(Object object) {
      TestCompactionContext ctx = (TestCompactionContext) object;
      compacting.removeAll(ctx.selectedFiles);
      notCompacting.addAll(ctx.selectedFiles);
    }
HBASE-7947: Regression test to ensure adding to the correct list in the {@link CompactSplit}
@throws Exception on failure
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompaction.java