Vinayak Joshi created SPARK-18687:
-------------------------------------
Summary: Backward compatibility - creating a Dataframe on a new
SQLContext object fails with a Derby error
Key: SPARK-18687
URL: https://issues.apache.org/jira/browse/SPARK-18687
Project: Spark
Issue Type: Bug
Components: PySpark, SQL
Affects Versions: 2.0.2, 2.0.1, 2.0.0
Environment: Spark built with hive support
Reporter: Vinayak Joshi
With a local spark instance built with hive support, (-Pyarn -Phadoop-2.6
-Dhadoop.version=2.6.0 -Phive -Phive-thriftserver)
The following script/sequence works in Pyspark without any error in 1.6.x, but
fails in 2.x.
{code}
people = sc.parallelize(["Michael,30", "Andy,12", "Justin,19"])
peoplePartsRDD = people.map(lambda p: p.split(","))
peopleRDD = peoplePartsRDD.map(lambda p: pyspark.sql.Row(name=p[0],
age=int(p[1])))
peopleDF= sqlContext.createDataFrame(peopleRDD)
peopleDF.first()
sqlContext2 = SQLContext(sc)
people2 = sc.parallelize(["Abcd,40", "Efgh,14", "Ijkl,16"])
peoplePartsRDD2 = people2.map(lambda l: l.split(","))
peopleRDD2 = peoplePartsRDD2.map(lambda p: pyspark.sql.Row(fname=p[0],
age=int(p[1])))
peopleDF2 = sqlContext2.createDataFrame(peopleRDD2) # <==== error here
{code}
The error produced is:
{noformat}
16/12/01 22:35:36 ERROR Schema: Failed initialising database.
Unable to open a test connection to the given database. JDBC url =
jdbc:derby:;databaseName=metastore_db;create=true, username = APP. Terminating
connection pool (set lazyInit to true if you expect to start your database
after your app). Original Exception: ------
java.sql.SQLException: Failed to start database 'metastore_db' with class
loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@4494053,
see the next exception for details.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
.
.
------
org.datanucleus.exceptions.NucleusDataStoreException: Unable to open a test
connection to the given database. JDBC url =
jdbc:derby:;databaseName=metastore_db;create=true, username = APP. Terminating
connection pool (set lazyInit to true if you expect to start your database
after your app). Original Exception: ------
java.sql.SQLException: Failed to start database 'metastore_db' with class
loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@519dabfd,
see the next exception for details.
at org.apache.derby.impl.jdb
.
.
.
NestedThrowables:
java.sql.SQLException: Unable to open a test connection to the given database.
JDBC url = jdbc:derby:;databaseName=metastore_db;create=true, username = APP.
Terminating connection pool (set lazyInit to true if you expect to start your
database after your app). Original Exception: ------
java.sql.SQLException: Failed to start database 'metastore_db' with class
loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@519dabfd,
see the next exception for details.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
.
.
.
Caused by: java.sql.SQLException: Unable to open a test connection to the given
database. JDBC url = jdbc:derby:;databaseName=metastore_db;create=true,
username = APP. Terminating connection pool (set lazyInit to true if you expect
to start your database after your app). Original Exception: ------
java.sql.SQLException: Failed to start database 'metastore_db' with class
loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@519dabfd,
see the next exception for details.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
.
.
.
16/12/01 22:48:09 ERROR Schema: Failed initialising database.
Unable to open a test connection to the given database. JDBC url =
jdbc:derby:;databaseName=metastore_db;create=true, username = APP. Terminating
connection pool (set lazyInit to true if you expect to start your database
after your app). Original Exception: ------
java.sql.SQLException: Failed to start database 'metastore_db' with class
loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@519dabfd,
see the next exception for details.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
.
.
.
Caused by: java.sql.SQLException: Failed to start database 'metastore_db' with
class loader
org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@519dabfd, see the
next exception for details.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown
Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
.
.
.
Caused by: ERROR XJ040: Failed to start database 'metastore_db' with class
loader org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@519dabfd,
see the next exception for details.
at org.apache.derby.iapi.error.StandardException.newException(Unknown
Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown
Source)
... 111 more
Caused by: ERROR XSDB6: Another instance of Derby may have already booted the
database
/Users/vinayak/devel/spark-stc/git_repo/spark-master-x/spark/metastore_db.
at org.apache.derby.iapi.error.StandardException.newException(Unknown
Source)
at org.apache.derby.iapi.error.StandardException.newException(Unknown
Source)
at
org.apache.derby.impl.store.raw.data.BaseDataFileFactory.privGetJBMSLockOnDB(Unknown
Source)
at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.run(Unknown
Source)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.derby.impl.store.raw.data.BaseDataFileFactory.getJBMSLockOnDB(Unknown
Source)
at
org.apache.derby.impl.store.raw.data.BaseDataFileFactory.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown
Source)
{noformat}
The error goes away if sqlContext2 is replaced with sqlContext in the last
(error) line. Since the SQLContext class is preserved for backward
compatibility, the changes in 2.x break scripts/notebooks that follow the above
pattern of calls and used to run fine with 1.6.x.
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