Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14638#discussion_r90063628
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/TableReader.scala ---
@@ -122,10 +126,20 @@ class HadoopTableReader(
val attrsWithIndex = attributes.zipWithIndex
val mutableRow = new SpecificInternalRow(attributes.map(_.dataType))
- val deserializedHadoopRDD = hadoopRDD.mapPartitions { iter =>
+ val deserializedHadoopRDD = hadoopRDD.mapPartitionsWithIndex { (index,
iter) =>
val hconf = broadcastedHadoopConf.value.value
val deserializer = deserializerClass.newInstance()
deserializer.initialize(hconf, tableDesc.getProperties)
+ if (skipHeaderLineCount > 0 && isTextInputFormatTable) {
+ val partition =
hadoopRDD.partitions(index).asInstanceOf[HadoopPartition]
--- End diff --
I wonder if it's best to be defensive and test whether these things are
actually instances of the classes they're expected to be? or is that too
paranoid?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
