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From "Dmitry Tolpeko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14416) NPE trying to move results of a subselect into an RDBMS using HPL/SQL
Date Mon, 11 Sep 2017 10:23:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16161029#comment-16161029
] 

Dmitry Tolpeko commented on HIVE-14416:
---------------------------------------

Currently INSERT AS SELECT works within a single database as atom statement, so it is not
separate select from one database and insert into another. To get the required functionality
use COPY statement. http://hplsql.org/copy

{code}
copy (select * from hivetable) to remote at mydbconn;
{code}

> NPE trying to move results of a subselect into an RDBMS using HPL/SQL
> ---------------------------------------------------------------------
>
>                 Key: HIVE-14416
>                 URL: https://issues.apache.org/jira/browse/HIVE-14416
>             Project: Hive
>          Issue Type: Bug
>          Components: hpl/sql
>    Affects Versions: 2.1.0
>            Reporter: Carter Shanklin
>            Assignee: Dmitry Tolpeko
>
> I was trying to use HPL/SQL to move some records from Hive to MySQL using this script:
> {code}
> MAP OBJECT remote TO pgtable AT mydbconn;
> insert into remote values ( select * from hivetable );
> {code}
> When I run this script I get this NPE:
> {code}
> Open connection: jdbc:hive2://hdp250.example.com:10000 (285 ms)
> Starting query
> Query executed successfully (127 ms)
> Exception in thread "main" java.lang.NullPointerException
> 	at org.apache.hive.hplsql.Select.getIntoCount(Select.java:405)
> 	at org.apache.hive.hplsql.Select.select(Select.java:88)
> 	at org.apache.hive.hplsql.Exec.visitSelect_stmt(Exec.java:1002)
> 	at org.apache.hive.hplsql.Exec.visitSelect_stmt(Exec.java:52)
> 	at org.apache.hive.hplsql.HplsqlParser$Select_stmtContext.accept(HplsqlParser.java:14768)
> 	at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visitChildren(AbstractParseTreeVisitor.java:70)
> 	at org.apache.hive.hplsql.Exec.visitStmt(Exec.java:994)
> 	at org.apache.hive.hplsql.Exec.visitStmt(Exec.java:52)
> 	at org.apache.hive.hplsql.HplsqlParser$StmtContext.accept(HplsqlParser.java:1012)
> 	at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visitChildren(AbstractParseTreeVisitor.java:70)
> 	at org.apache.hive.hplsql.HplsqlBaseVisitor.visitBlock(HplsqlBaseVisitor.java:28)
> 	at org.apache.hive.hplsql.HplsqlParser$BlockContext.accept(HplsqlParser.java:446)
> 	at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visitChildren(AbstractParseTreeVisitor.java:70)
> 	at org.apache.hive.hplsql.Exec.visitProgram(Exec.java:901)
> 	at org.apache.hive.hplsql.Exec.visitProgram(Exec.java:52)
> 	at org.apache.hive.hplsql.HplsqlParser$ProgramContext.accept(HplsqlParser.java:389)
> 	at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:42)
> 	at org.apache.hive.hplsql.Exec.run(Exec.java:760)
> 	at org.apache.hive.hplsql.Exec.run(Exec.java:736)
> 	at org.apache.hive.hplsql.Hplsql.main(Hplsql.java:23)
> 	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:498)
> 	at org.apache.hadoop.util.RunJar.run(RunJar.java:233)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
> {code}
> This is my configuration:
> {code}
> <configuration>
>   <property>
>     <name>hplsql.conn.default</name>
>     <value>myhiveconn</value>
>   </property>
>   <property>
>     <name>hplsql.conn.myhiveconn</name>
>     <value>org.apache.hive.jdbc.HiveDriver;jdbc:hive2://hdp250.example.com:10000</value>
>   </property>
>   <property>
>     <name>hplsql.conn.mydbconn</name>
>     <value>com.mysql.jdbc.Driver;jdbc:mysql://hdp250.example.com:3306/hive;hive;vagrant</value>
>   </property>
> </configuration>
> {code}



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