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 Tüzün <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}
>>>
>>>
>>
>
