https://hbase.apache.org/2.3/testdevapidocs/org/apache/hadoop/hbase/wal/TestAsyncFSWALCorruptionDueToDanglingByteBuffer.PauseWALProvider.html
TestAsyncFSWALCorruptionDueToDanglingByteBuffer.PauseWALProvider (Apache HBase 2.3.0 Test API)
apache hbasetestapi