Github user avulanov commented on a diff in the pull request:
https://github.com/apache/spark/pull/15382#discussion_r83089960
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -757,7 +758,10 @@ private[sql] class SQLConf extends Serializable with
CatalystConf with Logging {
def variableSubstituteDepth: Int = getConf(VARIABLE_SUBSTITUTE_DEPTH)
- def warehousePath: String = new Path(getConf(WAREHOUSE_PATH)).toString
+ def warehousePath: String = {
+ val path = new Path(getConf(WAREHOUSE_PATH))
+ FileSystem.get(path.toUri, new
Configuration()).makeQualified(path).toString
--- End diff --
`resolveURI` tries to use `new URI`, encounters a `URISyntaxException` due
to the white space symbol and falls back to: `new
File(path).getAbsoluteFile().toURI()`. The latter does not deal with schema.
This is why the first example looks weird:
```
scala> resolveURI("file:///C:/My Programs/path")
(Spark)res28: java.net.URI =
file:/c:/dis/dev/spark-2.0.0-preview-bin-hadoop2.7/bin/fil
e:/C:/My%20Programs/path
(Scala) res1: java.net.URI =
file:/C:/Users/ulanov/file:/C:/My%20Programs/path
-----no space----
scala> resolveURI("file:///C:/MyPrograms/path")
(Spark)java.net.URI = file:///C:/MyPrograms/path
(Scala) java.net.URI = file:///C:/MyPrograms/path
```
Second example is OK.
Third example works fine with white space on Windows (adds home on Linux)
but breaks without it:
````
scala> resolveURI("C:/My Programs/path")
res41: java.net.URI = file:/C:/My%20Programs/path
----no space---
scala> resolveURI("C:/MyPrograms/path")
res42: java.net.URI = C:/MyPrograms/path
```
Fourth works fine both with both. There is one more subtle thing, the
letter drive becomes lower case in Spark.
```
scala> resolveURI("/My Programs/path")
(Spark)res31: java.net.URI = file:/c:/My%20Programs/path
(Scala) res4: java.net.URI = file:/C:/My%20Programs/path
```
A character in the string should not be a reason to execute a particular
branch of code. We should rather check the schema and work from this.
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