我正在尝试在使用Citus创建的散列分布表中插入一些数据。在 Pyspark 中，我使用 JDBC postgres 驱动器将数据插入表中。我用来在 pyspark 中使用 JDBC 将数据插入表的代码是：
url = "jdbc:postgresql://host:port/db_name?rewriteBatchedStatements=true"
properties = {"user":"user_name","password":"password"}
df = spark.createDataFrame(rdd_name)
df.write.jdbc(url=url, table="table_name", mode="append", properties=properties)
使用此设置，我收到此错误：
: org.postgresql.util.PSQLException: ERROR: relation "table_name" already exists
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2455)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2155)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:288)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:430)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:356)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:303)
at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:289)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:266)
at org.postgresql.jdbc.PgStatement.executeUpdate(PgStatement.java:246)
at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.createTable(JdbcUtils.scala:692)
at org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider.createRelation(JdbcRelationProvider.scala:89)
at org.apache.spark.sql.execution.datasources.DataSource.write(DataSource.scala:426)
at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:215)
at org.apache.spark.sql.DataFrameWriter.jdbc(DataFrameWriter.scala:446)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:280)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:214)
at java.lang.Thread.run(Thread.java:745)
有人可以帮我如何在pyspark中使用jdbc将数据插入citus postgres吗？提前致谢。