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Big data & Spark

PySpark jobs, partitioning, batch processing, and large-dataset transform patterns.

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Big data & Spark easy

How to Truncate Lineage Back to a Checkpoint in Python

Walks a linked list of lineage nodes upward to find the nearest checkpoint and returns that node, truncating the lineage.

lineage checkpoint linked-list
Python 
class LineageNode:
    def __init__(self, name, parent=None, checkpoint=None):
        self.name = name
        self.parent = parent
        self.checkpoint = checkpoint

    def truncate_at_checkpoint(self):
        """Truncate lineage back to the last checkpoint."""
        current = self
        while current.check…
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