Re: Time is ugly in Spark Streaming....

2015-06-27 Thread Tathagata Das
Could you print the time on the driver (that is, in foreachRDD but before RDD.foreachPartition) and see if it is behaving weird? TD On Fri, Jun 26, 2015 at 3:57 PM, Emrehan Tüzün emrehan.tu...@gmail.com wrote: On Fri, Jun 26, 2015 at 12:30 PM, Sea 261810...@qq.com wrote: Hi, all I find

?????? Time is ugly in Spark Streaming....

2015-06-27 Thread Sea
...@gmail.com; Sea261810...@qq.com; devdev@spark.apache.org; useru...@spark.apache.org; : Re: Time is ugly in Spark Streaming Java's SimpleDateFormat is not thread safe. You can consider using DateTimeFormatter if you are using Java 8 or Joda-time On Sat, Jun 27, 2015 at 3:32 AM, Tathagata Das

Re: Time is ugly in Spark Streaming....

2015-06-27 Thread Dumas Hwang
Java's SimpleDateFormat is not thread safe. You can consider using DateTimeFormatter if you are using Java 8 or Joda-time On Sat, Jun 27, 2015 at 3:32 AM, Tathagata Das t...@databricks.com wrote: Could you print the time on the driver (that is, in foreachRDD but before RDD.foreachPartition)

Re: Time is ugly in Spark Streaming....

2015-06-26 Thread Emrehan Tüzün
On Fri, Jun 26, 2015 at 12:30 PM, Sea 261810...@qq.com wrote: Hi, all I find a problem in spark streaming, when I use the time in function foreachRDD... I find the time is very interesting. val messages = KafkaUtils.createDirectStream[String, String, StringDecoder, StringDecoder](ssc,

Time is ugly in Spark Streaming....

2015-06-26 Thread Sea
Hi, all I find a problem in spark streaming, when I use the time in function foreachRDD... I find the time is very interesting. val messages = KafkaUtils.createDirectStream[String, String, StringDecoder, StringDecoder](ssc, kafkaParams, topicsSet) dataStream.map(x = createGroup(x._2,

Re: Time is ugly in Spark Streaming....

2015-06-26 Thread Gerard Maas
Are you sharing the SimpleDateFormat instance? This looks a lot more like the non-thread-safe behaviour of SimpleDateFormat (that has claimed many unsuspecting victims over the years), than any 'ugly' Spark Streaming. Try writing the timestamps in millis to Kafka and compare. -kr, Gerard. On

?????? Time is ugly in Spark Streaming....

2015-06-26 Thread Sea
Yes, I make it. -- -- ??: Gerard Maas;gerard.m...@gmail.com; : 2015??6??26??(??) 5:40 ??: Sea261810...@qq.com; : useru...@spark.apache.org; devdev@spark.apache.org; : Re: Time is ugly in Spark Streaming Are you