pvary commented on a change in pull request #2921:
URL: https://github.com/apache/hive/pull/2921#discussion_r793291201
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File path: ql/src/java/org/apache/hadoop/hive/ql/exec/MoveTask.java
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@@ -97,6 +101,40 @@ public MoveTask() {
super();
}
+ public void flattenUnionSubdirectories(Path sourcePath) throws HiveException
{
+ try {
+ FileSystem fs = sourcePath.getFileSystem(conf);
+ LOG.info("Checking " + sourcePath + " for subdirectories to flatten");
+ Set<Path> unionSubdirs = new HashSet<>();
+ if (fs.exists(sourcePath)) {
Review comment:
This is a costly call. We have a same result with catching the relevant
exception in `listFiles`, and we can save one FileSystem.exists call.
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