nwangtw commented on a change in pull request #2910: make LocalFSStorage clean
checkpoints before store
URL: https://github.com/apache/incubator-heron/pull/2910#discussion_r191931212
##########
File path:
heron/statefulstorages/src/java/org/apache/heron/statefulstorage/localfs/LocalFileSystemStorage.java
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@@ -134,6 +146,23 @@ public void dispose(String topologyName, String
oldestCheckpointPreserved,
}
}
+ private void cleanCheckpoints(String path, int remaining) throws
StatefulStorageException {
+ if (FileUtils.isDirectoryExists(path) && FileUtils.hasChildren(path)) {
+ File[] children = new File(path).listFiles();
Review comment:
suggest to keep it consistent with dispose(), which uses:
String[] names = new File(topologyCheckpointRoot).list();
Sorting might be cheaper this way as well.
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