scala - Spark Structured Streaming not restarting at Kafka offsets -


we have long running spark structured streaming query reading kafka, , query pick left off after restart. however, have set startingoffsets "earliest" , see after restarts query reads start of kafka topic again.

our basic query looks this:

  val extract = sparksession     .readstream     .format("kafka")     .option("kafka.bootstrap.servers", "server:port")     .option("subscribe", "topic")     .option("startingoffsets", "earliest")     .load()    val query: streamingquery = extract      .writestream     .option("checkpointlocation", s"/tmp/checkpoint/kafka/")     .foreach(writer)     .start()

we see checkpoint directory getting created correctly , offsets expect in offset files.

when restart see message like:

25-07-2017 14:35:32 info  consumercoordinator:231 - setting newly assigned partitions [kafkatopic-2, kafkatopic-1, kafkatopic-0, kafkatopic-3] group spark-kafka-source-dedc01fb-c0a7-40ea-8358-a5081b961968--1396947302-driver

we telling query start @ "earliest" documentation says:

this applies when new streaming query started, , resuming pick query left off.

shouldn't mean restarting our application results in query resuming left off?

setting "group.id" kafka not allowed spark structured streaming. see this: note following kafka params cannot set , kafka source throw exception.

i tried adding queryname, in case being used identify query across runs did not have effect.

we using spark 2.1 on yarn.

any ideas on why not work or doing wrong?

update logs:

from driver

from worker


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