Fixes wrong path concatenation in DeltaLog

Uses the recently introduced DeltaTableUtils.safeConcatPaths to fix path concatenation in Delta to be able to deal correctly with URIs with an empty path component. GitOrigin-RevId: 6c1955134439ebb67b133e502af4efc9073a6482

Author: Lukas Rupprecht

spark/src/main/scala/org/apache/spark/sql/delta/DeltaLog.scala

@@ -600,8 +600,9 @@ object DeltaLog extends DeltaLogging {
  /** The name of the subdirectory that holds Delta metadata files */
  private val LOG_DIR_NAME = "_delta_log"
 
- private[delta] def logPathFor(dataPath: String): Path = new Path(dataPath, LOG_DIR_NAME)
- private[delta] def logPathFor(dataPath: Path): Path = new Path(dataPath, LOG_DIR_NAME)
+ private[delta] def logPathFor(dataPath: String): Path = logPathFor(new Path(dataPath))
+ private[delta] def logPathFor(dataPath: Path): Path =
+ DeltaTableUtils.safeConcatPaths(dataPath, LOG_DIR_NAME)
  private[delta] def logPathFor(dataPath: File): Path = logPathFor(dataPath.getAbsolutePath)
 
  /**