VM error: F-UDF-CL-LIB-1127: F-UDF-CL-SL-JAVA-1002: F-UDF-CL-SL-JAVA-1013: com.exasol.ExaUDFException: F-UDF-CL-SL-JAVA-1080: Exception during run alluxio.exception.status.UnavailableException: Failed to connect to master (GrpcServerAddress{HostName=172.18.0.3, SocketAddress=172.18.0.3:19998}) after 44 attempts.Please check if Alluxio master is currently running on "GrpcServerAddress{HostName=172.18.0.3, SocketAddress=172.18.0.3:19998}". Service="FileSystemMasterClient" alluxio.AbstractClient.connect(AbstractClient.java:321) alluxio.client.file.BaseFileSystem.rpc(BaseFileSystem.java:635) alluxio.client.file.BaseFileSystem.createFile(BaseFileSystem.java:174) alluxio.hadoop.AbstractFileSystem.create(AbstractFileSystem.java:181) org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1233) org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1210) org.apache.parquet.hadoop.util.HadoopOutputFile.create(HadoopOutputFile.java:74) org.apache.parquet.hadoop.ParquetFileWriter.<init>(ParquetFileWriter.java:347) org.apache.parquet.hadoop.ParquetFileWriter.<init>(ParquetFileWriter.java:314) org.apache.parquet.hadoop.ParquetWriter.<init>(ParquetWriter.java:292) org.apache.parquet.hadoop.ParquetWriter$Builder.build(ParquetWriter.java:680) com.exasol.cloudetl.parquet.ParquetRowWriter$.apply(ParquetRowWriter.scala:37) com.exasol.cloudetl.sink.BatchSizedSink$$anon$1.<init>(BatchSizedSink.scala:54) com.exasol.cloudetl.sink.BatchSizedSink.createWriter(BatchSizedSink.scala:51) com.exasol.cloudetl.sink.BatchSizedSink.openNewFile(BatchSizedSink.scala:106) com.exasol.cloudetl.sink.BatchSizedSink.write(BatchSizedSink.scala:75) com.exasol.cloudetl.scriptclasses.TableDataExporter$.runExport(TableDataExporter.scala:53) com.exasol.cloudetl.scriptclasses.TableDataExporter$.run(TableDataExporter.scala:36) com.exasol.cloudetl.scriptclasses.TableDataExporter.run(TableDataExporter.scala) com.exasol.ExaWrapper.run(ExaWrapper.java:197) Caused by: alluxio.exception.status.UnavailableException: Failed to handshake with master 172.18.0.3:19998 to load cluster default configuration values: UNKNOWN alluxio.conf.Configuration.loadConfiguration(Configuration.java:458) alluxio.ClientContext.loadConf(ClientContext.java:123) alluxio.ClientContext.loadConfIfNotLoaded(ClientContext.java:147) alluxio.AbstractClient.beforeConnect(AbstractClient.java:201) alluxio.AbstractMasterClient.beforeConnect(AbstractMasterClient.java:94) alluxio.AbstractClient.connect(AbstractClient.java:265) ... 19 more Caused by: io.grpc.StatusRuntimeException: UNKNOWN io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:271) io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:252) io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:165) alluxio.grpc.MetaMasterConfigurationServiceGrpc$MetaMasterConfigurationServiceBlockingStub.getConfiguration(MetaMasterConfigurationServiceGrpc.java:405) alluxio.conf.Configuration.loadConfiguration(Configuration.java:452) ... 24 more Caused by: java.lang.NoClassDefFoundError: Could not initialize class io.netty.channel.unix.Errors io.netty.channel.unix.Socket.connect(Socket.java:351) io.netty.channel.epoll.AbstractEpollChannel.doConnect0(AbstractEpollChannel.java:773) io.netty.channel.epoll.EpollSocketChannel.doConnect0(EpollSocketChannel.java:144) io.netty.channel.epoll.AbstractEpollChannel.doConnect(AbstractEpollChannel.java:758) io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.connect(AbstractEpollChannel.java:600) io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1342) io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:653) io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:632) io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:54) io.grpc.netty.WriteBufferingAndExceptionHandler.connect(WriteBufferingAndExceptionHandler.java:157) io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:655) io.netty.channel.AbstractChannelHandlerContext.access$1000(AbstractChannelHandlerContext.java:61) io.netty.channel.AbstractChannelHandlerContext$9.run(AbstractChannelHandlerContext.java:637) io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:406) io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) java.base/java.lang.Thread.run(Thread.java:829) (Session: 1773843226972979200)