The first time to getOffsetFromCk will throw exception

[allwefantasy]

No description provided.

[zhengqiangtan]

I meet this issue too,just like this
19/12/24 10:40:03 ERROR MLSQLBinLogDataSource: next on empty iterator java.util.NoSuchElementException: next on empty iterator at scala.collection.Iterator$$anon$2.next(Iterator.scala:39) at scala.collection.Iterator$$anon$2.next(Iterator.scala:37) at scala.collection.IndexedSeqLike$Elements.next(IndexedSeqLike.scala:63) at scala.collection.IterableLike$class.head(IterableLike.scala:107) at scala.collection.mutable.ArrayBuffer.scala$collection$IndexedSeqOptimized$$super$head(ArrayBuffer.scala:48) at scala.collection.IndexedSeqOptimized$class.head(IndexedSeqOptimized.scala:126) at scala.collection.mutable.ArrayBuffer.head(ArrayBuffer.scala:48) at scala.collection.TraversableLike$class.last(TraversableLike.scala:431) at scala.collection.mutable.ArrayBuffer.scala$collection$IndexedSeqOptimized$$super$last(ArrayBuffer.scala:48) at scala.collection.IndexedSeqOptimized$class.last(IndexedSeqOptimized.scala:132) at scala.collection.mutable.ArrayBuffer.last(ArrayBuffer.scala:48) at org.apache.spark.sql.mlsql.sources.MLSQLBinLogDataSource.getOffsetFromCk$1(MLSQLBinLogDataSource.scala:99) at org.apache.spark.sql.mlsql.sources.MLSQLBinLogDataSource.createSource(MLSQLBinLogDataSource.scala:106) at org.apache.spark.sql.execution.datasources.DataSource.createSource(DataSource.scala:255) at org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1$$anonfun$applyOrElse$1.apply(MicroBatchExecution.scala:88) at org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1$$anonfun$applyOrElse$1.apply(MicroBatchExecution.scala:85) at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:79) at org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1.applyOrElse(MicroBatchExecution.scala:85) at org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1.applyOrElse(MicroBatchExecution.scala:83) at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$2.apply(TreeNode.scala:259) at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$2.apply(TreeNode.scala:259) at org.apache.spark.sql.catalyst.trees.CurrentOrigin$.withOrigin(TreeNode.scala:70) at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:258) at org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.org$apache$spark$sql$catalyst$plans$logical$AnalysisHelper$$super$transformDown(LogicalPlan.scala:29) at org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper$class.transformDown(AnalysisHelper.scala:149) at org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.transformDown(LogicalPlan.scala:29) at org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.transformDown(LogicalPlan.scala:29) at org.apache.spark.sql.catalyst.trees.TreeNode.transform(TreeNode.scala:248) at org.apache.spark.sql.execution.streaming.MicroBatchExecution.logicalPlan$lzycompute(MicroBatchExecution.scala:83) at org.apache.spark.sql.execution.streaming.MicroBatchExecution.logicalPlan(MicroBatchExecution.scala:65) at org.apache.spark.sql.execution.streaming.StreamExecution.org$apache$spark$sql$execution$streaming$StreamExecution$$runStream(StreamExecution.scala:269) at org.apache.spark.sql.execution.streaming.StreamExecution$$anon$1.run(StreamExecution.scala:193) 19/12/24 10:40:03 INFO SparkContext: Starting job: start at MysqlBinLogRead.scala:44