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

[Sea]

Yes , things go well now.  It is a problem of SimpleDateFormat. Thank you all.




------------------ ???????? ------------------
??????: "Dumas Hwang";<dumas.hw...@gmail.com>;
????????: 2015??6??27??(??????) ????8:16
??????: "Tathagata Das"<t...@databricks.com>; 
????: "Emrehan T??z??n"<emrehan.tu...@gmail.com>; "Sea"<261810...@qq.com>; 
"dev"<dev@spark.apache.org>; "user"<u...@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 <t...@databricks.com> wrote:
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 T??z??n <emrehan.tu...@gmail.com> 
wrote:
 





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, kafkaParams, topicsSet)
 dataStream.map(x => createGroup(x._2, 
dimensions)).groupByKey().foreachRDD((rdd, time) => {
try {
if (!rdd.partitions.isEmpty) {
      rdd.foreachPartition(partition => {
handlePartition(partition, timeType, time, dimensions, outputTopic, brokerList)
      })
    }
  } catch {
case e: Exception => e.printStackTrace()
  }
})
 

 val dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss")
  var date = dateFormat.format(new Date(time.milliseconds)) 
 
 Then I insert the 'date' into Kafka , but I found .....
  

 
{"timestamp":"2015-06-00T16:50:02","status":"3","type":"1","waittime":"0","count":17}
 
{"timestamp":"2015-06-26T16:51:13","status":"1","type":"1","waittime":"0","count":34}
 
{"timestamp":"2015-06-00T16:50:02","status":"4","type":"0","waittime":"0","count":279}
 
{"timestamp":"2015-06-26T16:52:00","status":"11","type":"1","waittime":"0","count":9}
 
{"timestamp":"0020-06-26T16:50:36","status":"7","type":"0","waittime":"0","count":1722}
 
{"timestamp":"2015-06-10T16:51:17","status":"0","type":"0","waittime":"0","count":2958}
 
{"timestamp":"2015-06-26T16:52:00","status":"0","type":"1","waittime":"0","count":114}
 
{"timestamp":"2015-06-10T16:51:17","status":"11","type":"0","waittime":"0","count":2066}
 
{"timestamp":"2015-06-26T16:52:00","status":"1","type":"0","waittime":"0","count":1539}