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  1. Hadoop Common
  2. HADOOP-11786

Fix Javadoc typos in org.apache.hadoop.fs.FileSystem

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    • Hadoop Flags:
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      Description

      /**

      • Resets all statistics to 0.
        *
      • In order to reset, we add up all the thread-local statistics data, and
      • set rootData to the negative of that.
        *
      • This may seem like a counterintuitive way to reset the statsitics. Why
      • can't we just zero out all the thread-local data? Well, thread-local
      • data can only be modified by the thread that owns it. If we tried to
      • modify the thread-local data from this thread, our modification might get
      • interleaved with a read-modify-write operation done by the thread that
      • owns the data. That would result in our update getting lost.
        *
      • The approach used here avoids this problem because it only ever reads
      • (not writes) the thread-local data. Both reads and writes to rootData
      • are done under the lock, so we're free to modify rootData from any thread
      • that holds the lock.
        */

      etc.

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        1. HADOOP-11786.patch
          7 kB
          Andras Bokor

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            • Assignee:
              boky01 Andras Bokor
              Reporter:
              airbots Chen He
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