trait ColumnarWriteJobStatsTracker extends Serializable
A class implementing this trait is basically a collection of parameters that are necessary
for instantiating a (derived type of) ColumnarWriteTaskStatsTracker on all executors and then
process the statistics produced by them (e.g. save them to memory/disk, issue warnings, etc).
It is therefore important that such an objects is Serializable, as it will be sent
from the driver to all executors.
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abstract
def
newTaskInstance(): ColumnarWriteTaskStatsTracker
Instantiates a ColumnarWriteTaskStatsTracker, based on (non-transient) members of this class.
Instantiates a ColumnarWriteTaskStatsTracker, based on (non-transient) members of this class. To be called by executors.
- returns
A ColumnarWriteTaskStatsTracker instance to be used for computing stats during a write task
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abstract
def
processStats(stats: Seq[WriteTaskStats], jobCommitTime: Long): Unit
Process the given collection of stats computed during this job.
Process the given collection of stats computed during this job. E.g. aggregate them, write them to memory / disk, issue warnings, whatever.
- stats
One
WriteTaskStatsobject from each successful write task.- jobCommitTime
Time of committing the job.
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