[GitHub] helix pull request #200: throw new Exception to avoid ugly NPE

[lujiefsi]

Github user lujiefsi commented on a diff in the pull request:

    https://github.com/apache/helix/pull/200#discussion_r185983242
  
    --- Diff: 
helix-core/src/main/java/org/apache/helix/tools/commandtools/ZkGrep.java ---
    @@ -607,6 +611,10 @@ public static void processCommandLineArgs(String[] 
cliArgs) {
           }
           // zkDataDirs[0] is the transaction log dir
           List<File> parsedZkLogs = parseZkLogs(zkDataDirs[0], startTime, 
endTime);
    +      if (parsedZkLogs == null) {
    +          LOG.error("fail t0 gunzip file" + zkDataDirs[0]);
    --- End diff --
    
    hum, 0--->o???


---