Have been trying to connect Spark 2.2.1 on my EMR 5.11.0 cluster to our Redshift store.
The approaches I followed was -
Use the inbuilt Redshift JDBC
pyspark --jars /usr/share/aws/redshift/jdbc/RedshiftJDBC41.jar from pyspark.sql import SQLContext sc sql_context = SQLContext(sc) redshift_url = "jdbc:redshift://HOST:PORT/DATABASE?user=USER&password=PASSWORD" redshift_query = "select * from table;" redshift_query_tempdir_storage = "s3://personal_warehouse/wip_dumps/" # Read data from a query df_users = sql_context.read \ .format("com.databricks.spark.redshift") \ .option("url", redshift_url) \ .option("query", redshift_query) \ .option("tempdir", redshift_query_tempdir_storage) \ .option("forward_spark_s3_credentials", "true") \ .load()
This gives me the following error -
Traceback (most recent call last): File "", line 7, in File "/usr/lib/spark/python/pyspark/sql/readwriter.py", line 165, in load return self._df(self._jreader.load()) File "/usr/lib/spark/python/lib/py4j-0.10.4-src.zip/py4j/java_gateway.py", line 1133, in call File "/usr/lib/spark/python/pyspark/sql/utils.py", line 63, in deco return f(*a, kw) File "/usr/lib/spark/python/lib/py4j-0.10.4-src.zip/py4j/protocol.py", line 319, in get_return_value ***py4j.protocol.Py4JJavaError: An error occurred while calling o63.load. : java.lang.ClassNotFoundException: Failed to find data source: com.databricks.spark.redshift. Please find packages at http://spark.apache.org/third-party-projects.html at* org.apache.spark.sql.execution.datasources.DataSource$.lookupDataSource(DataSource.scala:546) at org.apache.spark.sql.execution.datasources.DataSource.providingClass$lzycompute(DataSource.scala:87) at org.apache.spark.sql.execution.datasources.DataSource.providingClass(DataSource.scala:87) at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:302) at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:178) at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:146) 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 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) Caused by: java.lang.ClassNotFoundException: com.databricks.spark.redshift.DefaultSource at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$22$$anonfun$apply$14.apply(DataSource.scala:530) at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$22$$anonfun$apply$14.apply(DataSource.scala:530) at scala.util.Try$.apply(Try.scala:192) at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$22.apply(DataSource.scala:530) at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$22.apply(DataSource.scala:530) at scala.util.Try.orElse(Try.scala:84) at org.apache.spark.sql.execution.datasources.DataSource$.lookupDataSource(DataSource.scala:530) ... 16 more
Can someone please help tell where I've missed out on something / made a stupid mistake?
Thanks!