gianm 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_r237239966
##########
File path:
core/src/main/java/org/apache/druid/java/util/common/CompressionUtils.java
##########
@@ -78,16 +78,12 @@ public static long zip(File directory, File outputZipFile,
boolean fsync) throws
log.warn("No .zip suffix[%s], putting files from [%s] into it anyway.",
outputZipFile, directory);
}
- try (final FileOutputStream out = new FileOutputStream(outputZipFile)) {
- long bytes = zip(directory, out);
-
- // For explanation of why fsyncing here is a good practice:
- //
https://github.com/apache/incubator-druid/pull/5187#pullrequestreview-85188984
- if (fsync) {
- out.getChannel().force(true);
+ if (fsync) {
+ return FileUtils.writeAtomically(outputZipFile, out -> zip(directory,
out));
+ } else {
+ try (final FileOutputStream out = new FileOutputStream(outputZipFile)) {
Review comment:
Got it. So, sure, I do see a few thousand of those, on a box that has 5000
segments loaded. & that box does about 0.5s-2s of GC activity per minute.
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