org.apache.spark.sql.delta.util
DeltaCommitFileProvider
Companion object DeltaCommitFileProvider
case class DeltaCommitFileProvider(logPath: String, maxVersionInclusive: Long, uuids: Map[Long, String]) extends Product with Serializable
Provides access to resolve Delta commit files names based on the commit-version.
This class is part of the changes introduced to accommodate the adoption of coordinated-commits
in Delta Lake. Previously, certain code paths assumed the existence of delta files for a specific
version at a predictable path _delta_log/$version.json. With coordinated-commits, delta files
may alternatively be located at _delta_log/_commits/$version.$uuid.json.
DeltaCommitFileProvider attempts to locate the correct delta files from the Snapshot's
LogSegment.
- logPath
The path to the Delta table log directory.
- maxVersionInclusive
The maximum version of the Delta table (inclusive).
- uuids
A map of version numbers to their corresponding UUIDs.
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DeltaCommitFileProvider(logPath: String, maxVersionInclusive: Long, uuids: Map[Long, String])
- logPath
The path to the Delta table log directory.
- maxVersionInclusive
The maximum version of the Delta table (inclusive).
- uuids
A map of version numbers to their corresponding UUIDs.
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- def deltaFile(version: Long): Path
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def
listSortedUnbackfilledDeltaFiles(startVersionOpt: Option[Long] = None): Seq[(Long, Path)]
Lists unbackfilled delta files in a sorted order without incurring additional IO operations.
- val logPath: String
- val maxVersionInclusive: Long
- lazy val minUnbackfilledVersion: Long
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- val uuids: Map[Long, String]
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