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1.  final def !=(arg0: Any): Boolean

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2.  final def ##(): Int

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3.  final def ==(arg0: Any): Boolean

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4.  final def asInstanceOf[T0]: T0

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5.  def clone(): AnyRef

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6.  def createSnapshot(segment: LogSegment, minFileRetentionTimestamp: Long, timestamp: Long): Snapshot

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7.  val currentSnapshot: Snapshot

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   @volatile()

8.  final def eq(arg0: AnyRef): Boolean

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9.  def equals(arg0: Any): Boolean

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10.  def finalize(): Unit

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11.  final def getClass(): Class[_]

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12.  def getLogSegmentForVersion(startCheckpoint: Option[Long], versionToLoad: Option[Long] = None): LogSegment

    Get a list of files that can be used to compute a Snapshot at version versionToLoad, If versionToLoad is not provided, will generate the list of files that are needed to load the latest version of the Delta table.

    Get a list of files that can be used to compute a Snapshot at version versionToLoad, If versionToLoad is not provided, will generate the list of files that are needed to load the latest version of the Delta table. This method also performs checks to ensure that the delta files are contiguous.

    startCheckpoint

    A potential start version to perform the listing of the DeltaLog, typically that of a known checkpoint. If this version's not provided, we will start listing from version 0.

    versionToLoad

    A specific version to load. Typically used with time travel and the Delta streaming source. If not provided, we will try to load the latest version of the table.

    returns

    Some LogSegment to build a Snapshot if files do exist after the given startCheckpoint. None, if there are no new files after startCheckpoint.

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13.  def getLogSegmentFrom(startingCheckpoint: Option[CheckpointMetaData]): LogSegment

    Get the LogSegment that will help in computing the Snapshot of the table at DeltaLog initialization.

    Get the LogSegment that will help in computing the Snapshot of the table at DeltaLog initialization.

    startingCheckpoint

    A checkpoint that we can start our listing from

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14.  def getSnapshotAt(version: Long, commitTimestamp: Option[Long] = None, lastCheckpointHint: Option[CheckpointInstance] = None): Snapshot

    Get the snapshot at version.

15.  def getSnapshotAtInit: Snapshot

    Load the Snapshot for this Delta table at initialization.

    Load the Snapshot for this Delta table at initialization. This method uses the lastCheckpoint file as a hint on where to start listing the transaction log directory. If the _delta_log directory doesn't exist, this method will return an InitialSnapshot.

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16.  def hashCode(): Int

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17.  final def isInstanceOf[T0]: Boolean

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18.  val lastUpdateTimestamp: Long

    The timestamp when the last successful update action is finished.

    The timestamp when the last successful update action is finished.

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19.  final def ne(arg0: AnyRef): Boolean

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20.  final def notify(): Unit

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21.  final def notifyAll(): Unit

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22.  def snapshot: Snapshot

    Returns the current snapshot.

    Returns the current snapshot. Note this does not automatically update().

23.  final def synchronized[T0](arg0: ⇒ T0): T0

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24.  def toString(): String

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25.  def update(stalenessAcceptable: Boolean = false): Snapshot

    Update ActionLog by applying the new delta files if any.

    Update ActionLog by applying the new delta files if any.

    stalenessAcceptable

    Whether we can accept working with a stale version of the table. If the table has surpassed our staleness tolerance, we will update to the latest state of the table synchronously. If staleness is acceptable, and the table hasn't passed the staleness tolerance, we will kick off a job in the background to update the table state, and can return a stale snapshot in the meantime.

26.  def updateInternal(isAsync: Boolean): Snapshot

    Queries the store for new delta files and applies them to the current state.

    Queries the store for new delta files and applies them to the current state. Note: the caller should hold deltaLogLock before calling this method.

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27.  def verifyDeltaVersions(versions: Array[Long]): Unit

    Verify the versions are contiguous.

    Verify the versions are contiguous.

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28.  final def wait(): Unit

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29.  final def wait(arg0: Long, arg1: Int): Unit

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30.  final def wait(arg0: Long): Unit

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