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From "sam rash (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5140) setting fs.default.name to an invalid URI format kills init thread in JobTracker
Date Thu, 29 Jan 2009 02:28:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12668293#action_12668293

sam rash commented on HADOOP-5140:

first stack trace:
2009-01-28 18:15:41,531 ERROR org.apache.hadoop.mapred.EagerTaskInitializationListener: Job
initialization failed:
        at java.net.URI.create(URI.java:842)
        at org.apache.hadoop.fs.FileSystem.getDefaultUri(FileSystem.java:128)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:208)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:175)
        at org.apache.hadoop.mapred.JobHistory$JobInfo.getJobHistoryFileName(JobHistory.java:630)
        at org.apache.hadoop.mapred.JobHistory$JobInfo.logSubmitted(JobHistory.java:803)
        at org.apache.hadoop.mapred.JobInProgress.initTasks(JobInProgress.java:353)
        at org.apache.hadoop.mapred.EagerTaskInitializationListener$JobInitThread.run(EagerTaskInitializationListener.java:55)
        at java.lang.Thread.run(Thread.java:637)
Caused by: java.net.URISyntaxException: Illegal character in authority at index 7: hdfs://${name}
        at java.net.URI$Parser.fail(URI.java:2809)
        at java.net.URI$Parser.parseAuthority(URI.java:3147)
        at java.net.URI$Parser.parseHierarchical(URI.java:3058)
        at java.net.URI$Parser.parse(URI.java:3014)
        at java.net.URI.<init>(URI.java:578)
        at java.net.URI.create(URI.java:840)
        ... 8 more

code with the problem:

class JobInitThread implements Runnable {
    public void run() {
      JobInProgress job;
      while (true) {
        job = null;
        try {
          synchronized (jobInitQueue) {
            while (jobInitQueue.isEmpty()) {
            job = jobInitQueue.remove(0);
        } catch (InterruptedException t) {
        } catch (Throwable t) {
          LOG.error("Job initialization failed:\n" +
          if (job != null) {

job.fail() eventually calls garbageCollect() which trys to get the filesystem from the jobconf.
 The same exceptoin as above will occur when it trys to cleanup the dfs tmp dir, but this
time it's not caught (being thrown inside the catch() block) and kills the JobInitThread

> setting fs.default.name to an invalid URI format kills init thread in JobTracker
> --------------------------------------------------------------------------------
>                 Key: HADOOP-5140
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5140
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.19.0
>            Reporter: sam rash
>            Priority: Minor
> If you set fs.default.name in a JobConf object to something that causes java.net.URI
to throw an IllegalArgumentException, the job not only fails initalization, but kills the

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