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From "Umesh Chaudhary (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-20319) Already quoted identifiers are getting wrapped with additional quotes
Date Thu, 13 Apr 2017 07:24:41 GMT

    [ https://issues.apache.org/jira/browse/SPARK-20319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15967229#comment-15967229
] 

Umesh Chaudhary commented on SPARK-20319:
-----------------------------------------

I am working on fix, please assign this to me. 

> Already quoted identifiers are getting wrapped with additional quotes
> ---------------------------------------------------------------------
>
>                 Key: SPARK-20319
>                 URL: https://issues.apache.org/jira/browse/SPARK-20319
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.0, 2.1.0
>            Reporter: Umesh Chaudhary
>
> The issue was caused by [SPARK-16387|https://issues.apache.org/jira/browse/SPARK-16387]
where reserved SQL words are honored by wrapping quotes on column names. 
> In our test we found that when quotes are explicitly wrapped in column names then Oracle
JDBC driver is throwing : 
> java.sql.BatchUpdateException: ORA-01741: illegal zero-length identifier 
> at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:12296)

> at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:246)

> at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.savePartition(JdbcUtils.scala:597)

> and Cassandra JDBC driver is throwing : 
> 17/04/12 19:03:48 ERROR executor.Executor: Exception in task 0.0 in stage 5.0 (TID 6)
> java.sql.SQLSyntaxErrorException: [FMWGEN][Cassandra JDBC Driver][Cassandra]syntax error
or access rule violation: base table or view not found: 
> 	at weblogic.jdbc.cassandrabase.ddcl.b(Unknown Source)
> 	at weblogic.jdbc.cassandrabase.ddt.a(Unknown Source)
> 	at weblogic.jdbc.cassandrabase.BaseConnection.prepareStatement(Unknown Source)
> 	at weblogic.jdbc.cassandrabase.BaseConnection.prepareStatement(Unknown Source)
> 	at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.insertStatement(JdbcUtils.scala:118)
> 	at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.savePartition(JdbcUtils.scala:571)
> CC: [~rxin] , [~joshrosen]



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