Maciej Bryński created SPARK-21287:
--------------------------------------
Summary: Cannot use Iint.MIN_VALUE as Spark SQL fetchsize
Key: SPARK-21287
URL: https://issues.apache.org/jira/browse/SPARK-21287
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.1.1
Reporter: Maciej Bryński
MySQL JDBC driver gives possibility to not store ResultSet in memory.
We can do this by setting fetchSize to Int.MIN_VALUE.
Unfortunately this configuration isn't correct in Spark.
{code}
java.lang.IllegalArgumentException: requirement failed: Invalid value
`-2147483648` for parameter `fetchsize`. The minimum value is 0. When the value
is 0, the JDBC driver ignores the value and does the estimates.
at scala.Predef$.require(Predef.scala:224)
at
org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions.<init>(JDBCOptions.scala:105)
at
org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions.<init>(JDBCOptions.scala:34)
at
org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider.createRelation(JdbcRelationProvider.scala:32)
at
org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:330)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:152)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:125)
at org.apache.spark.sql.DataFrameReader.jdbc(DataFrameReader.scala:166)
at org.apache.spark.sql.DataFrameReader.jdbc(DataFrameReader.scala:206)
at sun.reflect.GeneratedMethodAccessor46.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
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:748)
{code}
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
