Exception while using Spark HBase Connector on HDP2.6

mrizvi — Tue, 09 Jan 2018 07:01:10 GMT

Hi Guys,

I am using Spark 1.6.3 and HBase is 1.1.2 on hdp2.6. I have to use Spark 1.6, cannot go to Spark 2. The connector jar is shc-1.0.0-1.6-s_2.10.jar. I am writing to hbase table from the pyspark dataframe:

cat = json.dumps({"table":{"namespace":"dsc", "name":"table1", "tableCoder":"PrimitiveType"},"rowkey":"key","columns": {"individual_id":{"cf":"rowkey", "col":"key", "type":"string"}, "model_id":{"cf":"cf1", "col":"model_id", "type":"string"}, "individual_id":{"cf":"cf1", "col":"individual_id", "type":"string"}, "individual_id_proxy":{"cf":"cf1", "col":"individual_id_proxy", "type":"string"}}})

df.write.option("catalog",cat).format("org.apache.spark.sql.execution.datasources.hbase").save()

The error is:

An error occurred while calling o202.save. : java.lang.UnsupportedOperationException: empty.tail at scala.collection.TraversableLike$class.tail(TraversableLike.scala:445) at scala.collection.mutable.ArraySeq.scala$collection$IndexedSeqOptimized$super$tail(ArraySeq.scala:45) at scala.collection.IndexedSeqOptimized$class.tail(IndexedSeqOptimized.scala:123) at scala.collection.mutable.ArraySeq.tail(ArraySeq.scala:45) at org.apache.spark.sql.execution.datasources.hbase.HBaseTableCatalog.initRowKey(HBaseTableCatalog.scala:141) at org.apache.spark.sql.execution.datasources.hbase.HBaseTableCatalog.<init>(HBaseTableCatalog.scala:152) at org.apache.spark.sql.execution.datasources.hbase.HBaseTableCatalog$.apply(HBaseTableCatalog.scala:209) at org.apache.spark.sql.execution.datasources.hbase.HBaseRelation.<init>(HBaseRelation.scala:163) at org.apache.spark.sql.execution.datasources.hbase.DefaultSource.createRelation(HBaseRelation.scala:58) at org.apache.spark.sql.execution.datasources.ResolvedDataSource$.apply(ResolvedDataSource.scala:222) at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:148) 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:231) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381) at py4j.Gateway.invoke(Gateway.java:259) at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133) at py4j.commands.CallCommand.execute(CallCommand.java:79) at py4j.GatewayConnection.run(GatewayConnection.java:209) at java.lang.Thread.run(Thread.java:745)

Please let me know if anyone has come across this.

Re: Exception while using Spark HBase Connector on HDP2.6

mrizvi — Wed, 10 Jan 2018 05:05:02 GMT

Solved it. It was missing values for the RowKey as pointed out by the error:

org.apache.spark.sql.execution.datasources.hbase.HBaseTableCatalog.initRowKey(HBaseTableCatalog.scala:141) at org.apache.spark.sql.execution.datasources.hbase.HBaseTableCatalog.<init>(HBaseTableCatalog.scala:152) at org.apache.spark.sql.execution.datasources.hbase.HBaseTableCatalog$.apply(HBaseTableCatalog.scala:209) at

I created the Row object which included all dataframe columns and then it worked.

question Re: Exception while using Spark HBase Connector on HDP2.6 in Archives of Support Questions (Read Only)

Exception while using Spark HBase Connector on HDP2.6

Re: Exception while using Spark HBase Connector on HDP2.6