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Posted to hdfs-dev@hadoop.apache.org by "Walter Su (JIRA)" <ji...@apache.org> on 2015/07/15 11:15:04 UTC

[jira] [Created] (HDFS-8779) WebUI can't display randomly generated block ID

Walter Su created HDFS-8779:
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             Summary: WebUI can't display randomly generated block ID
                 Key: HDFS-8779
                 URL: https://issues.apache.org/jira/browse/HDFS-8779
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: webhdfs
            Reporter: Walter Su
            Assignee: Walter Su
            Priority: Minor


Old release use randomly generated block ID(HDFS-4645).
max value of Long in Java is 2^63-1
max value of number in Javascript is 2^53-1. ( See [Link|https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER])

Which means almost every randomly generated block ID exceeds MAX_SAFE_INTEGER.

A integer which exceeds MAX_SAFE_INTEGER cannot be represented in Javascript.



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