Then my ingestion job failed with this:

Failed to generate Pinot segment for file - file:/Users/dunith/Projects/streamlit/rawdata/uber-raw-data-sep14.csv

java.lang.IllegalArgumentException: Invalid format: "null"

at org.joda.time.format.DateTimeParserBucket.doParseMillis(DateTimeParserBucket.java:187) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.joda.time.format.DateTimeFormatter.parseMillis(DateTimeFormatter.java:826) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.apache.pinot.segment.local.segment.creator.impl.SegmentColumnarIndexCreator.writeMetadata(SegmentColumnarIndexCreator.java:552) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.apache.pinot.segment.local.segment.creator.impl.SegmentColumnarIndexCreator.seal(SegmentColumnarIndexCreator.java:512) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.apache.pinot.segment.local.segment.creator.impl.SegmentIndexCreationDriverImpl.handlePostCreation(SegmentIndexCreationDriverImpl.java:284) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.apache.pinot.segment.local.segment.creator.impl.SegmentIndexCreationDriverImpl.build(SegmentIndexCreationDriverImpl.java:257) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.apache.pinot.plugin.ingestion.batch.common.SegmentGenerationTaskRunner.run(SegmentGenerationTaskRunner.java:111) ~[pinot-all-0.8.0-jar-with-dependencies.jar:0.8.0-c4ceff06d21fc1c1b88469a8dbae742a4b609808]

at org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner.lambda$submitSegmentGenTask$1(SegmentGenerationJobRunner.java:263) ~[pinot-batch-ingestion-standalone-0.8.0-shaded.jar:0.8.0-9a0f41bc24243ff74315723b0153b534c2596e30]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]

at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]

at java.lang.Thread.run(Thread.java:834) [?:?]

Maybe try adding 'allowNullTimeValue' property to your Segments Config (https://docs.pinot.apache.org/configuration-reference/table#segments-config)