[SPARK-23402] Dataset write method not working as expected for postgresql database

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 2.2.1
• Component/s: Spark Core, SQL

Environment

PostgreSQL: 9.5.8 (10 + Also same issue)

OS: Cent OS 7 & Windows 7,8

JDBC: 9.4-1201-jdbc41

 

Spark:  I executed in both 2.1.0 and 2.2.1

Mode: Standalone

OS: Windows 7

• Assignee: Unassigned
• Reporter: Pallapothu Jyothi Swaroop
• Created: 13/Feb/18 05:49
• Updated: 18/Feb/18 15:59
• Resolved: 18/Feb/18 15:59

Description

I am using spark dataset write to insert data on postgresql existing table. For this I am using  write method mode as append mode. While using i am getting exception like table already exists. But, I gave option as append mode.

It's strange. When i change options to sqlserver/oracle append mode is working as expected.

 

Database Properties:

destinationProps.put("driver", "org.postgresql.Driver"); destinationProps.put("url", "jdbc:postgresql://127.0.0.1:30001/dbmig"); destinationProps.put("user", "dbmig");

destinationProps.put("password", "dbmig");

 

Dataset Write Code:

valueAnalysisDataset.write().mode(SaveMode.Append).jdbc(destinationDbMap.get("url"), "dqvalue", destinationdbProperties); 

 

 

Exception in thread "main" org.postgresql.util.PSQLException: ERROR: relation "dqvalue" already exists at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2412) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2125) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:297) at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:428) at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:354) at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:301) at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:287) at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:264) at org.postgresql.jdbc.PgStatement.executeUpdate(PgStatement.java:244) at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.createTable(JdbcUtils.scala:806) at org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider.createRelation(JdbcRelationProvider.scala:95) at org.apache.spark.sql.execution.datasources.DataSource.write(DataSource.scala:469) at org.apache.spark.sql.execution.datasources.SaveIntoDataSourceCommand.run(SaveIntoDataSourceCommand.scala:50) at org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult$lzycompute(commands.scala:58) at org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult(commands.scala:56) at org.apache.spark.sql.execution.command.ExecutedCommandExec.doExecute(commands.scala:74) at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:117) at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:117) at org.apache.spark.sql.execution.SparkPlan$$anonfun$executeQuery$1.apply(SparkPlan.scala:138) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) at org.apache.spark.sql.execution.SparkPlan.executeQuery(SparkPlan.scala:135) at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:116) at org.apache.spark.sql.execution.QueryExecution.toRdd$lzycompute(QueryExecution.scala:92) at org.apache.spark.sql.execution.QueryExecution.toRdd(QueryExecution.scala:92) at org.apache.spark.sql.DataFrameWriter.runCommand(DataFrameWriter.scala:609) at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:233) at org.apache.spark.sql.DataFrameWriter.jdbc(DataFrameWriter.scala:460) at com.ads.dqam.action.impl.PostgresValueAnalysis.persistValueAnalysis(PostgresValueAnalysis.java:25) at com.ads.dqam.action.AbstractValueAnalysis.persistAnalysis(AbstractValueAnalysis.java:81) at com.ads.dqam.Analysis.doAnalysis(Analysis.java:32) at com.ads.dqam.Client.main(Client.java:71)