Details
-
Bug
-
Status: Resolved
-
Major
-
Resolution: Incomplete
-
1.6.2
-
None
Description
when use SparkFiles.get a file on driver in yarn-client or yarn-cluster, it will report file not found exception.
This exception only happens on driver, SparkFiles.get works fine on executor.
we can reproduce the bug as follows:
```scala
def testOnDriver(fileName: String) = {
val file = new File(SparkFiles.get(fileName))
if (!file.exists())
else {
// print file content on driver
val content = Source.fromFile(file).getLines().mkString("\n")
logging.info(s"File content: ${content}")
}
}
// the output will be file not exist
```
```python
conf = SparkConf().setAppName("test files")
sc = SparkContext(appName="spark files test")
def test_on_driver(filename):
file = SparkFiles.get(filename)
print("file path: {}".format(file))
if os.path.exists(file):
with open(file) as f:
lines = f.readlines()
print(lines)
else:
print("file doesn't exist")
run_command("ls .")
```
