Example usage for org.apache.hadoop.mapreduce JobID JOB

Introduction

In this page you can find the example usage for org.apache.hadoop.mapreduce JobID JOB.

Prototype

String JOB

To view the source code for org.apache.hadoop.mapreduce JobID JOB.

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Usage

From source file:org.apache.tez.auxservices.ShuffleHandler.java

License:Apache License

private void recoverState(Configuration conf) throws IOException {
    Path recoveryRoot = getRecoveryPath();
    if (recoveryRoot != null) {
        startStore(recoveryRoot);/*from w  w w  . j  av a 2 s.  c  om*/
        Pattern jobPattern = Pattern.compile(JobID.JOBID_REGEX);
        LeveldbIterator iter = null;
        try {
            iter = new LeveldbIterator(stateDb);
            iter.seek(bytes(JobID.JOB));
            while (iter.hasNext()) {
                Map.Entry<byte[], byte[]> entry = iter.next();
                String key = asString(entry.getKey());
                if (!jobPattern.matcher(key).matches()) {
                    break;
                }
                recoverJobShuffleInfo(key, entry.getValue());
            }
        } catch (DBException e) {
            throw new IOException("Database error during recovery", e);
        } finally {
            if (iter != null) {
                iter.close();
            }
        }
    }
}

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