org.apache.storm.hdfs.bolt.sync

## Interface SyncPolicy

- All Superinterfaces:
    Serializable
  All Known Implementing Classes:
    CountSyncPolicy

      public interface SyncPolicy
      extends Serializable

  Interface for controlling when the HdfsBolt syncs and flushes the filesystem.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `mark(Tuple tuple, long offset)` Called for every tuple the HdfsBolt executes.
    `void` | `reset()` Called after the HdfsBolt performs a sync.

- - ### Method Detail

    - #### mark

          boolean mark(Tuple tuple,
                       long offset)

      Called for every tuple the HdfsBolt executes.

      Parameters:
        `tuple` - The tuple executed.
        `offset` - current offset for the file being written
      Returns:
        true if a sync should be performed

    - #### reset

          void reset()

      Called after the HdfsBolt performs a sync.

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