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  1. Hive
  2. HIVE-28369

LLAP proactive eviction fails with NullPointerException

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      When hive.llap.io.encode.enabled is false, LLAP proactive eviction fails with NullPointerException as follows:

      java.lang.NullPointerException: null
  at org.apache.hadoop.hive.llap.io.api.impl.LlapIoImpl.evictEntity(LlapIoImpl.java:313) ~[hive-llap-server-4.1.0-SNAPSHOT.jar:4.1.0-SNAPSHOT]
  at org.apache.hadoop.hive.llap.daemon.impl.LlapProtocolServerImpl.evictEntity(LlapProtocolServerImpl.java:365) ~[hive-llap-server-4.1.0-SNAPSHOT.jar:4.1.0-SNAPSHOT]
  at org.apache.hadoop.hive.llap.daemon.rpc.LlapDaemonProtocolProtos$LlapManagementProtocol$2.callBlockingMethod(LlapDaemonProtocolProtos.java:33214) ~[hive-exec-4.1.0-SNAPSHOT.jar:4.1.0-SNAPSHOT]
  at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.processCall(ProtobufRpcEngine.java:484) ~[hadoop-common-3.3.6.jar:?]
  at org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:595) ~[hadoop-common-3.3.6.jar:?]
...

       

      In fact,  3 caches used by LlapIoImpl.evictEntity() may be null or throw UnsupportedOperationException, so we should check whether it is safe to call markBuffersForProactiveEviction() or not.

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          Web Link GitHub Pull Request #5345

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              seonggon Seonggon Namgung
              seonggon Seonggon Namgung
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