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org.apache.cassandra.io.FSReadError: java.lang.NullPointerException at org.apache.cassandra.db.ColumnFamilyStore.removeUnfinishedCompactionLeftovers(ColumnFamilyStore.java:669)[cassandra-all-2.1.9.791.jar:2.1.9.791] at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:302)[cassandra-all-2.1.9.791.jar:2.1.9.791] at com.datastax.bdp.server.DseDaemon.setup(DseDaemon.java:335)[dse-core-4.8.0.jar:4.8.0] at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:537)[cassandra-all-2.1.9.791.jar:2.1.9.791] at com.datastax.bdp.DseModule.main(DseModule.java:75)[dse-core-4.8.0.jar:4.8.0]Caused by: java.lang.NullPointerException: null at org.apache.cassandra.db.ColumnFamilyStore.removeUnfinishedCompactionLeftovers(ColumnFamilyStore.java:661)[cassandra-all-2.1.9.791.jar:2.1.9.791] ... 4 more