Ok, I don't think I'm clear on the issue then. Can you say what the expected behavior is, and what the observed behavior is?
On Thu, Nov 17, 2016 at 10:48 AM, Hoang Bao Thien <hbthien0...@gmail.com> wrote: > Hi, > > Thanks for your comments. But in fact, I don't want to limit the size of > batches, it could be any greater size as it does. > > Thien > > On Fri, Nov 18, 2016 at 1:17 AM, Cody Koeninger <c...@koeninger.org> wrote: >> >> If you want a consistent limit on the size of batches, use >> spark.streaming.kafka.maxRatePerPartition (assuming you're using >> createDirectStream) >> >> http://spark.apache.org/docs/latest/configuration.html#spark-streaming >> >> On Thu, Nov 17, 2016 at 12:52 AM, Hoang Bao Thien <hbthien0...@gmail.com> >> wrote: >> > Hi, >> > >> > I use CSV and other text files to Kafka just to test Kafka + Spark >> > Streaming >> > by using direct stream. That's why I don't want Spark streaming reads >> > CSVs >> > or text files directly. >> > In addition, I don't want a giant batch of records like the link you >> > sent. >> > The problem is that we should receive the "similar" number of record of >> > all >> > batchs instead of the first two or three batches have so large number of >> > records (e.g., 100K) but the last 1000 batches with only 200 records. >> > >> > I know that the problem is not from the auto.offset.reset=largest, but I >> > don't know what I can do in this case. >> > >> > Do you and other ones could suggest me some solutions please as this >> > seems >> > the normal situation with Kafka+SpartStreaming. >> > >> > Thanks. >> > Alex >> > >> > >> > >> > On Thu, Nov 17, 2016 at 2:32 AM, Cody Koeninger <c...@koeninger.org> >> > wrote: >> >> >> >> Yeah, if you're reporting issues, please be clear as to whether >> >> backpressure is enabled, and whether maxRatePerPartition is set. >> >> >> >> I expect that there is something wrong with backpressure, see e.g. >> >> https://issues.apache.org/jira/browse/SPARK-18371 >> >> >> >> On Wed, Nov 16, 2016 at 5:05 PM, bo yang <bobyan...@gmail.com> wrote: >> >> > I hit similar issue with Spark Streaming. The batch size seemed a >> >> > little >> >> > random. Sometime it was large with many Kafka messages inside same >> >> > batch, >> >> > sometimes it was very small with just a few messages. Is it possible >> >> > that >> >> > was caused by the backpressure implementation in Spark Streaming? >> >> > >> >> > On Wed, Nov 16, 2016 at 4:22 PM, Cody Koeninger <c...@koeninger.org> >> >> > wrote: >> >> >> >> >> >> Moved to user list. >> >> >> >> >> >> I'm not really clear on what you're trying to accomplish (why put >> >> >> the >> >> >> csv file through Kafka instead of reading it directly with spark?) >> >> >> >> >> >> auto.offset.reset=largest just means that when starting the job >> >> >> without any defined offsets, it will start at the highest (most >> >> >> recent) available offsets. That's probably not what you want if >> >> >> you've already loaded csv lines into kafka. >> >> >> >> >> >> On Wed, Nov 16, 2016 at 2:45 PM, Hoang Bao Thien >> >> >> <hbthien0...@gmail.com> >> >> >> wrote: >> >> >> > Hi all, >> >> >> > >> >> >> > I would like to ask a question related to the size of Kafka >> >> >> > stream. I >> >> >> > want >> >> >> > to put data (e.g., file *.csv) to Kafka then use Spark streaming >> >> >> > to >> >> >> > get >> >> >> > the >> >> >> > output from Kafka and then save to Hive by using SparkSQL. The >> >> >> > file >> >> >> > csv >> >> >> > is >> >> >> > about 100MB with ~250K messages/rows (Each row has about 10 fields >> >> >> > of >> >> >> > integer). I see that Spark Streaming first received two >> >> >> > partitions/batches, >> >> >> > the first is of 60K messages and the second is of 50K msgs. But >> >> >> > from >> >> >> > the >> >> >> > third batch, Spark just received 200 messages for each batch (or >> >> >> > partition). >> >> >> > I think that this problem is coming from Kafka or some >> >> >> > configuration >> >> >> > in >> >> >> > Spark. I already tried to configure with the setting >> >> >> > "auto.offset.reset=largest", but every batch only gets 200 >> >> >> > messages. >> >> >> > >> >> >> > Could you please tell me how to fix this problem? >> >> >> > Thank you so much. >> >> >> > >> >> >> > Best regards, >> >> >> > Alex >> >> >> > >> >> >> >> >> >> >> >> >> --------------------------------------------------------------------- >> >> >> To unsubscribe e-mail: user-unsubscr...@spark.apache.org >> >> >> >> >> > >> > >> > > > --------------------------------------------------------------------- To unsubscribe e-mail: user-unsubscr...@spark.apache.org
