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author | hyukjinkwon <gurwls223@gmail.com> | 2016-11-22 22:25:27 -0800 |
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committer | Reynold Xin <rxin@databricks.com> | 2016-11-22 22:25:27 -0800 |
commit | 2559fb4b40c9f42f7b3ed2b77de14461f68b6fa5 (patch) | |
tree | 9e864f087e38e5edd82fa446a46355fe4cb0324a /README.md | |
parent | 982b82e32e0fc7d30c5d557944a79eb3e6d2da59 (diff) | |
download | spark-2559fb4b40c9f42f7b3ed2b77de14461f68b6fa5.tar.gz spark-2559fb4b40c9f42f7b3ed2b77de14461f68b6fa5.tar.bz2 spark-2559fb4b40c9f42f7b3ed2b77de14461f68b6fa5.zip |
[SPARK-18179][SQL] Throws analysis exception with a proper message for unsupported argument types in reflect/java_method function
## What changes were proposed in this pull request?
This PR proposes throwing an `AnalysisException` with a proper message rather than `NoSuchElementException` with the message ` key not found: TimestampType` when unsupported types are given to `reflect` and `java_method` functions.
```scala
spark.range(1).selectExpr("reflect('java.lang.String', 'valueOf', cast('1990-01-01' as timestamp))")
```
produces
**Before**
```
java.util.NoSuchElementException: key not found: TimestampType
at scala.collection.MapLike$class.default(MapLike.scala:228)
at scala.collection.AbstractMap.default(Map.scala:59)
at scala.collection.MapLike$class.apply(MapLike.scala:141)
at scala.collection.AbstractMap.apply(Map.scala:59)
at org.apache.spark.sql.catalyst.expressions.CallMethodViaReflection$$anonfun$findMethod$1$$anonfun$apply$1.apply(CallMethodViaReflection.scala:159)
...
```
**After**
```
cannot resolve 'reflect('java.lang.String', 'valueOf', CAST('1990-01-01' AS TIMESTAMP))' due to data type mismatch: arguments from the third require boolean, byte, short, integer, long, float, double or string expressions; line 1 pos 0;
'Project [unresolvedalias(reflect(java.lang.String, valueOf, cast(1990-01-01 as timestamp)), Some(<function1>))]
+- Range (0, 1, step=1, splits=Some(2))
...
```
Added message is,
```
arguments from the third require boolean, byte, short, integer, long, float, double or string expressions
```
## How was this patch tested?
Tests added in `CallMethodViaReflection`.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes #15694 from HyukjinKwon/SPARK-18179.
Diffstat (limited to 'README.md')
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