Github user afine commented on a diff in the pull request: https://github.com/apache/zookeeper/pull/236#discussion_r117345530 --- 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 -- fixed
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