Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/10392#discussion_r48133110
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -2072,14 +2072,15 @@ class SparkContext(config: SparkConf) extends
Logging with ExecutorAllocationCli
// Otherwise, the driver may attempt to reconstruct the checkpointed
RDD from
// its own local file system, which is incorrect because the
checkpoint files
// are actually on the executor machines.
- if (!isLocal && Utils.nonLocalPaths(directory).isEmpty) {
+ val path = new Path(directory, UUID.randomUUID().toString)
+ val fs = path.getFileSystem(hadoopConfiguration)
+ val isDirLocal = fs.isInstanceOf[LocalFileSystem]
+ if (!isLocal && Utils.nonLocalPaths(directory).isEmpty && !isDirLocal)
{
--- End diff --
Is the "host:port" the issue? then write `hdfs:///path/xxx`.
My suggestion is to modify the warning message to something like `s"If
Spark is not running in local mode, then the checkpoint directory must not be
on the local filesystem. Directory '$directory' appears to be on the local
filesystem."` It still causes a warning in your case, but I believe that
warning is avoidable (?) with the right `hdfs` URI in this case. Hence it's
still useful.
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