leventov commented on a change in pull request #6677: FileUtils: Sync directory
entry too on writeAtomically.
URL: https://github.com/apache/incubator-druid/pull/6677#discussion_r237088162
##########
File path: core/src/main/java/org/apache/druid/java/util/common/FileUtils.java
##########
@@ -207,9 +215,20 @@ private static void writeAtomically(final File file,
final File tmpDir, OutputSt
StandardCopyOption.ATOMIC_MOVE,
StandardCopyOption.REPLACE_EXISTING
);
+
+ // fsync the directory entry to ensure the new file will be visible
after a crash.
+ try (final FileChannel directory =
FileChannel.open(file.getParentFile().toPath(), StandardOpenOption.READ)) {
+ directory.force(true);
+ }
+
+ return retVal;
}
finally {
- tmpFile.delete();
+ if (tmpFile.exists()) {
+ if (!tmpFile.delete()) {
Review comment:
`Files.delete()` will allow to see the reason of the failure (IO error or
file not found, or permissions, etc.)
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