[SPARK-22109][SQL][BRANCH-2.2] Resolves type conflicts between strings and timestamps in partition column #19333
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…amps in partition column
This PR proposes to resolve the type conflicts in strings and timestamps in partition column values.
It looks we need to set the timezone as it needs a cast between strings and timestamps.
```scala
val df = Seq((1, "2015-01-01 00:00:00"), (2, "2014-01-01 00:00:00"), (3, "blah")).toDF("i", "str")
val path = "/tmp/test.parquet"
df.write.format("parquet").partitionBy("str").save(path)
spark.read.parquet(path).show()
```
**Before**
```
java.util.NoSuchElementException: None.get
at scala.None$.get(Option.scala:347)
at scala.None$.get(Option.scala:345)
at org.apache.spark.sql.catalyst.expressions.TimeZoneAwareExpression$class.timeZone(datetimeExpressions.scala:46)
at org.apache.spark.sql.catalyst.expressions.Cast.timeZone$lzycompute(Cast.scala:172)
at org.apache.spark.sql.catalyst.expressions.Cast.timeZone(Cast.scala:172)
at org.apache.spark.sql.catalyst.expressions.Cast$$anonfun$castToString$3$$anonfun$apply$16.apply(Cast.scala:208)
at org.apache.spark.sql.catalyst.expressions.Cast$$anonfun$castToString$3$$anonfun$apply$16.apply(Cast.scala:208)
at org.apache.spark.sql.catalyst.expressions.Cast.org$apache$spark$sql$catalyst$expressions$Cast$$buildCast(Cast.scala:201)
at org.apache.spark.sql.catalyst.expressions.Cast$$anonfun$castToString$3.apply(Cast.scala:207)
at org.apache.spark.sql.catalyst.expressions.Cast.nullSafeEval(Cast.scala:533)
at org.apache.spark.sql.catalyst.expressions.UnaryExpression.eval(Expression.scala:331)
at org.apache.spark.sql.execution.datasources.PartitioningUtils$$anonfun$org$apache$spark$sql$execution$datasources$PartitioningUtils$$resolveTypeConflicts$1.apply(PartitioningUtils.scala:481)
at org.apache.spark.sql.execution.datasources.PartitioningUtils$$anonfun$org$apache$spark$sql$execution$datasources$PartitioningUtils$$resolveTypeConflicts$1.apply(PartitioningUtils.scala:480)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
```
**After**
```
+---+-------------------+
| i| str|
+---+-------------------+
| 2|2014-01-01 00:00:00|
| 1|2015-01-01 00:00:00|
| 3| blah|
+---+-------------------+
```
Unit tests added in `ParquetPartitionDiscoverySuite` and manual tests.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes apache#19331 from HyukjinKwon/SPARK-22109.
|
LGTM, pending Jenkins. |
|
Test build #82119 has finished for PR 19333 at commit
|
|
Thanks! merging to branch-2.2. |
asfgit
pushed a commit
that referenced
this pull request
Sep 23, 2017
…s and timestamps in partition column ## What changes were proposed in this pull request? This PR backports 04975a6 into branch-2.2. ## How was this patch tested? Unit tests in `ParquetPartitionDiscoverySuite`. Author: hyukjinkwon <gurwls223@gmail.com> Closes #19333 from HyukjinKwon/SPARK-22109-backport-2.2.
|
@HyukjinKwon Could you close this PR? |
MatthewRBruce
pushed a commit
to Shopify/spark
that referenced
this pull request
Jul 31, 2018
…s and timestamps in partition column ## What changes were proposed in this pull request? This PR backports apache@04975a6 into branch-2.2. ## How was this patch tested? Unit tests in `ParquetPartitionDiscoverySuite`. Author: hyukjinkwon <gurwls223@gmail.com> Closes apache#19333 from HyukjinKwon/SPARK-22109-backport-2.2.
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What changes were proposed in this pull request?
This PR backports 04975a6 into branch-2.2.
How was this patch tested?
Unit tests in
ParquetPartitionDiscoverySuite.