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[Spark] Mark DeltaConfig.DATA_SKIPPING_NUM_INDEXED_COLS lazy #3707

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[Spark] Mark DeltaConfig.DATA_SKIPPING_NUM_INDEXED_COLS lazy #3707

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5 changes: 4 additions & 1 deletion spark/src/main/scala/org/apache/spark/sql/delta/DeltaConfig.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -535,7 +535,10 @@ trait DeltaConfigsBase extends DeltaLogging {
* (e.g., in append and OPTIMIZE) as well as data skipping (e.g., the column stats beyond this
* number will be ignored even when they exist).
*/
val DATA_SKIPPING_NUM_INDEXED_COLS = buildConfig[Int](
lazy val DATA_SKIPPING_NUM_INDEXED_COLS = buildConfig[Int](
// This is lazy because of the initialization order.
// DeltaConfig -> DataSkippingReader -> Column.apply -> SQLConf.get
// -> SparkSession -> SqlGatewayConfig -> DeltaConfig
"dataSkippingNumIndexedCols",
DataSkippingReader.DATA_SKIPPING_NUM_INDEXED_COLS_DEFAULT_VALUE.toString,
_.toInt,
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