我正在尝试使用 mongo db api（spark mongo db 连接器）连接到 azure cosmos db，以将数据导出到 hdfs，但出现以下异常：
以下是完整的堆栈跟踪：
{ "_t" : "OKMongoResponse", "ok" : 0, "code" : 115, "errmsg" : "Command is not supported", "$err" : "Command is not supported" }
at com.mongodb.connection.ProtocolHelper.getCommandFailureException(ProtocolHelper.java:115)
at com.mongodb.connection.CommandProtocol.execute(CommandProtocol.java:107)
at com.mongodb.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:159)
at com.mongodb.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:289)
at com.mongodb.connection.DefaultServerConnection.command(DefaultServerConnection.java:176)
at com.mongodb.operation.CommandOperationHelper.executeWrappedCommandProtocol(CommandOperationHelper.java:216)
at com.mongodb.operation.CommandOperationHelper.executeWrappedCommandProtocol(CommandOperationHelper.java:187)
at com.mongodb.operation.CommandOperationHelper.executeWrappedCommandProtocol(CommandOperationHelper.java:179)
at com.mongodb.operation.CommandOperationHelper.executeWrappedCommandProtocol(CommandOperationHelper.java:92)
at com.mongodb.operation.CommandOperationHelper.executeWrappedCommandProtocol(CommandOperationHelper.java:85)
at com.mongodb.operation.CommandReadOperation.execute(CommandReadOperation.java:55)
at com.mongodb.Mongo.execute(Mongo.java:810)
at com.mongodb.Mongo$2.execute(Mongo.java:797)
at com.mongodb.MongoDatabaseImpl.runCommand(MongoDatabaseImpl.java:137)
at com.mongodb.MongoDatabaseImpl.runCommand(MongoDatabaseImpl.java:131)
at com.mongodb.spark.rdd.partitioner.MongoSplitVectorPartitioner$$anonfun$partitions$2$$anonfun$4.apply(MongoSplitVectorPartitioner.scala:76)
at com.mongodb.spark.rdd.partitioner.MongoSplitVectorPartitioner$$anonfun$partitions$2$$anonfun$4.apply(MongoSplitVectorPartitioner.scala:76)
at scala.util.Try$.apply(Try.scala:192)
at com.mongodb.spark.rdd.partitioner.MongoSplitVectorPartitioner$$anonfun$partitions$2.apply(MongoSplitVectorPartitioner.scala:76)
at com.mongodb.spark.rdd.partitioner.MongoSplitVectorPartitioner$$anonfun$partitions$2.apply(MongoSplitVectorPartitioner.scala:75)
at com.mongodb.spark.MongoConnector$$anonfun$withDatabaseDo$1.apply(MongoConnector.scala:171)
at com.mongodb.spark.MongoConnector$$anonfun$withDatabaseDo$1.apply(MongoConnector.scala:171)
at com.mongodb.spark.MongoConnector.withMongoClientDo(MongoConnector.scala:154)
at com.mongodb.spark.MongoConnector.withDatabaseDo(MongoConnector.scala:171)
at com.mongodb.spark.rdd.partitioner.MongoSplitVectorPartitioner.partitions(MongoSplitVectorPartitioner.scala:75)
at com.mongodb.spark.rdd.MongoRDD.getPartitions(MongoRDD.scala:137)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:252)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:250)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:250)
at org.apache.spark.rdd.MapPartitionsRDD.getPartitions(MapPartitionsRDD.scala:35)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:252)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:250)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:250)
at org.apache.spark.rdd.MapPartitionsRDD.getPartitions(MapPartitionsRDD.scala:35)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:252)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:250)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:250)
at org.apache.spark.rdd.MapPartitionsRDD.getPartitions(MapPartitionsRDD.scala:35)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:252)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:250)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:250)
at org.apache.spark.sql.Dataset.<init>(Dataset.scala:182)
at org.apache.spark.sql.Dataset$.ofRows(Dataset.scala:67)
at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:636)
at org.apache.spark.sql.SQLContext.sql(SQLContext.scala:691)
添加了 Maven 依赖项：
<dependency>
<groupId>org.mongodb.spark</groupId>
<artifactId>mongo-spark-connector_2.11</artifactId>
<version>2.2.0</version>
</dependency>
代码 ：
SparkSession spark = SparkSession.builder()
.getOrCreate();
jsc = new JavaSparkContext(spark.sparkContext());
HiveContext hiveContext = new org.apache.spark.sql.hive.HiveContext(jsc);
Dataset<Row> implicitDS = MongoSpark.load(jsc).toDF();
供参考 ：
implicitDS.count() 给出 0
我正在使用 MongoSplitVectorPartitioner。更新了完整的堆栈跟踪。