Github user rakeshadr commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/236#discussion_r117283048
--- Diff: src/java/main/org/apache/zookeeper/server/PurgeTxnLog.java ---
@@ -133,11 +133,17 @@ public boolean accept(File f){
}
}
// add all non-excluded log files
- List<File> files = new ArrayList<File>(Arrays.asList(txnLog
- .getDataDir().listFiles(new MyFileFilter(PREFIX_LOG))));
+ List<File> files = new ArrayList<File>();
+ File[] fileArray;
+ if ((fileArray = txnLog.getDataDir().listFiles(new
MyFileFilter(PREFIX_LOG))) != null) {
+ files.addAll(Arrays.asList(fileArray));
+ }
+
// add all non-excluded snapshot files to the deletion list
- files.addAll(Arrays.asList(txnLog.getSnapDir().listFiles(
- new MyFileFilter(PREFIX_SNAPSHOT))));
+ if ((fileArray = txnLog.getSnapDir().listFiles(new
MyFileFilter(PREFIX_SNAPSHOT))) != null) {
--- End diff --
Same as above, Its good to keep the var assignment outside if check for
better readability.
`(fileArray = txnLog.getSnapDir().listFiles(new
MyFileFilter(PREFIX_SNAPSHOT))`
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