Re: No output from Spark Streaming program with Spark 1.0
I looked at the Streaming UI for my job and it reports that it has
processed many batches, but that none of the batches had any records in
them. Unfortunately, that’s what I expected. :-(
I’ve tried multiple test programs and I’m seeing the same thing. The
Kafka sources are alive and well and the programs all worked on 0.9 from
Eclipse. And there’s no indication of any failure — just no records are
being delivered.
Any ideas would be much appreciated …
Thanks,
Jim
On 5/23/14, 7:29 PM, Tathagata Das tathagata.das1...@gmail.com wrote:
Few more suggestions.
1. See the web ui, is the system running any jobs? If not, then you may
need to give the system more nodes. Basically the system should have more
cores than the number of receivers.
2. Furthermore there is a streaming specific web ui which gives more
streaming specific data.
On Fri, May 23, 2014 at 6:02 PM, Patrick Wendell pwend...@gmail.com
wrote:
Also one other thing to try, try removing all of the logic form inside
of foreach and just printing something. It could be that somehow an
exception is being triggered inside of your foreach block and as a
result the output goes away.
On Fri, May 23, 2014 at 6:00 PM, Patrick Wendell pwend...@gmail.com
wrote:
Hey Jim,
Do you see the same behavior if you run this outside of eclipse?
Also, what happens if you print something to standard out when setting
up your streams (i.e. not inside of the foreach) do you see that? This
could be a streaming issue, but it could also be something related to
the way it's running in eclipse.
- Patrick
On Fri, May 23, 2014 at 2:57 PM, Jim Donahue jdona...@adobe.com
wrote:
I¹m trying out 1.0 on a set of small Spark Streaming tests and am
running
into problems. Here¹s one of the little programs I¹ve used for a
long
time ‹ it reads a Kafka stream that contains Twitter JSON tweets and
does
some simple counting. The program starts OK (it connects to the
Kafka
stream fine) and generates a stream of INFO logging messages, but
never
generates any output. :-(
I¹m running this in Eclipse, so there may be some class loading issue
(loading the wrong class or something like that), but I¹m not seeing
anything in the console output.
Thanks,
Jim Donahue
Adobe
val kafka_messages =
KafkaUtils.createStream[Array[Byte], Array[Byte],
kafka.serializer.DefaultDecoder,
kafka.serializer.DefaultDecoder](ssc,
propsMap, topicMap, StorageLevel.MEMORY_AND_DISK)
val messages = kafka_messages.map(_._2)
val total = ssc.sparkContext.accumulator(0)
val startTime = new java.util.Date().getTime()
val jsonstream = messages.map[JSONObject](message =
{val string = new String(message);
val json = new JSONObject(string);
total += 1
json
}
)
val deleted = ssc.sparkContext.accumulator(0)
val msgstream = jsonstream.filter(json =
if (!json.has(delete)) true else { deleted += 1; false}
)
msgstream.foreach(rdd = {
if(rdd.count() 0){
val data = rdd.map(json = (json.has(entities),
json.length())).collect()
val entities: Double = data.count(t = t._1)
val fieldCounts = data.sortBy(_._2)
val minFields = fieldCounts(0)._2
val maxFields = fieldCounts(fieldCounts.size - 1)._2
val now = new java.util.Date()
val interval = (now.getTime() - startTime) / 1000
System.out.println(now.toString)
System.out.println(processing time: + interval + seconds)
System.out.println(total messages: + total.value)
System.out.println(deleted messages: + deleted.value)
System.out.println(message receipt rate: +
(total.value/interval)
+ per second)
System.out.println(messages this interval: + data.length)
System.out.println(message fields varied between: +
minFields
+
and + maxFields)
System.out.println(fraction with entities is + (entities /
data.length))
}
}
)
ssc.start()
Re: No output from Spark Streaming program with Spark 1.0
What does the kafka receiver status on the streaming UI say when you are
connected to the Kafka sources? Does it show any error?
Can you find out which machine the receiver is running and see the worker
logs for any exceptions / error messages? Try turning on the DEBUG level in
log4j.
TD
On May 24, 2014 4:58 PM, Jim Donahue jdona...@adobe.com wrote:
I looked at the Streaming UI for my job and it reports that it has
processed many batches, but that none of the batches had any records in
them. Unfortunately, that’s what I expected. :-(
I’ve tried multiple test programs and I’m seeing the same thing. The
Kafka sources are alive and well and the programs all worked on 0.9 from
Eclipse. And there’s no indication of any failure — just no records are
being delivered.
Any ideas would be much appreciated …
Thanks,
Jim
On 5/23/14, 7:29 PM, Tathagata Das tathagata.das1...@gmail.com wrote:
Few more suggestions.
1. See the web ui, is the system running any jobs? If not, then you may
need to give the system more nodes. Basically the system should have more
cores than the number of receivers.
2. Furthermore there is a streaming specific web ui which gives more
streaming specific data.
On Fri, May 23, 2014 at 6:02 PM, Patrick Wendell pwend...@gmail.com
wrote:
Also one other thing to try, try removing all of the logic form inside
of foreach and just printing something. It could be that somehow an
exception is being triggered inside of your foreach block and as a
result the output goes away.
On Fri, May 23, 2014 at 6:00 PM, Patrick Wendell pwend...@gmail.com
wrote:
Hey Jim,
Do you see the same behavior if you run this outside of eclipse?
Also, what happens if you print something to standard out when setting
up your streams (i.e. not inside of the foreach) do you see that? This
could be a streaming issue, but it could also be something related to
the way it's running in eclipse.
- Patrick
On Fri, May 23, 2014 at 2:57 PM, Jim Donahue jdona...@adobe.com
wrote:
I¹m trying out 1.0 on a set of small Spark Streaming tests and am
running
into problems. Here¹s one of the little programs I¹ve used for a
long
time ‹ it reads a Kafka stream that contains Twitter JSON tweets and
does
some simple counting. The program starts OK (it connects to the
Kafka
stream fine) and generates a stream of INFO logging messages, but
never
generates any output. :-(
I¹m running this in Eclipse, so there may be some class loading issue
(loading the wrong class or something like that), but I¹m not seeing
anything in the console output.
Thanks,
Jim Donahue
Adobe
val kafka_messages =
KafkaUtils.createStream[Array[Byte], Array[Byte],
kafka.serializer.DefaultDecoder,
kafka.serializer.DefaultDecoder](ssc,
propsMap, topicMap, StorageLevel.MEMORY_AND_DISK)
val messages = kafka_messages.map(_._2)
val total = ssc.sparkContext.accumulator(0)
val startTime = new java.util.Date().getTime()
val jsonstream = messages.map[JSONObject](message =
{val string = new String(message);
val json = new JSONObject(string);
total += 1
json
}
)
val deleted = ssc.sparkContext.accumulator(0)
val msgstream = jsonstream.filter(json =
if (!json.has(delete)) true else { deleted += 1; false}
)
msgstream.foreach(rdd = {
if(rdd.count() 0){
val data = rdd.map(json = (json.has(entities),
json.length())).collect()
val entities: Double = data.count(t = t._1)
val fieldCounts = data.sortBy(_._2)
val minFields = fieldCounts(0)._2
val maxFields = fieldCounts(fieldCounts.size - 1)._2
val now = new java.util.Date()
val interval = (now.getTime() - startTime) / 1000
System.out.println(now.toString)
System.out.println(processing time: + interval + seconds)
System.out.println(total messages: + total.value)
System.out.println(deleted messages: + deleted.value)
System.out.println(message receipt rate: +
(total.value/interval)
+ per second)
System.out.println(messages this interval: + data.length)
System.out.println(message fields varied between: +
minFields
+
and + maxFields)
System.out.println(fraction with entities is + (entities /
data.length))
}
}
)
ssc.start()
No output from Spark Streaming program with Spark 1.0
I¹m trying out 1.0 on a set of small Spark Streaming tests and am running
into problems. Here¹s one of the little programs I¹ve used for a long
time ‹ it reads a Kafka stream that contains Twitter JSON tweets and does
some simple counting. The program starts OK (it connects to the Kafka
stream fine) and generates a stream of INFO logging messages, but never
generates any output. :-(
I¹m running this in Eclipse, so there may be some class loading issue
(loading the wrong class or something like that), but I¹m not seeing
anything in the console output.
Thanks,
Jim Donahue
Adobe
val kafka_messages =
KafkaUtils.createStream[Array[Byte], Array[Byte],
kafka.serializer.DefaultDecoder, kafka.serializer.DefaultDecoder](ssc,
propsMap, topicMap, StorageLevel.MEMORY_AND_DISK)
val messages = kafka_messages.map(_._2)
val total = ssc.sparkContext.accumulator(0)
val startTime = new java.util.Date().getTime()
val jsonstream = messages.map[JSONObject](message =
{val string = new String(message);
val json = new JSONObject(string);
total += 1
json
}
)
val deleted = ssc.sparkContext.accumulator(0)
val msgstream = jsonstream.filter(json =
if (!json.has(delete)) true else { deleted += 1; false}
)
msgstream.foreach(rdd = {
if(rdd.count() 0){
val data = rdd.map(json = (json.has(entities),
json.length())).collect()
val entities: Double = data.count(t = t._1)
val fieldCounts = data.sortBy(_._2)
val minFields = fieldCounts(0)._2
val maxFields = fieldCounts(fieldCounts.size - 1)._2
val now = new java.util.Date()
val interval = (now.getTime() - startTime) / 1000
System.out.println(now.toString)
System.out.println(processing time: + interval + seconds)
System.out.println(total messages: + total.value)
System.out.println(deleted messages: + deleted.value)
System.out.println(message receipt rate: + (total.value/interval)
+ per second)
System.out.println(messages this interval: + data.length)
System.out.println(message fields varied between: + minFields +
and + maxFields)
System.out.println(fraction with entities is + (entities /
data.length))
}
}
)
ssc.start()
Re: No output from Spark Streaming program with Spark 1.0
Also one other thing to try, try removing all of the logic form inside
of foreach and just printing something. It could be that somehow an
exception is being triggered inside of your foreach block and as a
result the output goes away.
On Fri, May 23, 2014 at 6:00 PM, Patrick Wendell pwend...@gmail.com wrote:
Hey Jim,
Do you see the same behavior if you run this outside of eclipse?
Also, what happens if you print something to standard out when setting
up your streams (i.e. not inside of the foreach) do you see that? This
could be a streaming issue, but it could also be something related to
the way it's running in eclipse.
- Patrick
On Fri, May 23, 2014 at 2:57 PM, Jim Donahue jdona...@adobe.com wrote:
I¹m trying out 1.0 on a set of small Spark Streaming tests and am running
into problems. Here¹s one of the little programs I¹ve used for a long
time ‹ it reads a Kafka stream that contains Twitter JSON tweets and does
some simple counting. The program starts OK (it connects to the Kafka
stream fine) and generates a stream of INFO logging messages, but never
generates any output. :-(
I¹m running this in Eclipse, so there may be some class loading issue
(loading the wrong class or something like that), but I¹m not seeing
anything in the console output.
Thanks,
Jim Donahue
Adobe
val kafka_messages =
KafkaUtils.createStream[Array[Byte], Array[Byte],
kafka.serializer.DefaultDecoder, kafka.serializer.DefaultDecoder](ssc,
propsMap, topicMap, StorageLevel.MEMORY_AND_DISK)
val messages = kafka_messages.map(_._2)
val total = ssc.sparkContext.accumulator(0)
val startTime = new java.util.Date().getTime()
val jsonstream = messages.map[JSONObject](message =
{val string = new String(message);
val json = new JSONObject(string);
total += 1
json
}
)
val deleted = ssc.sparkContext.accumulator(0)
val msgstream = jsonstream.filter(json =
if (!json.has(delete)) true else { deleted += 1; false}
)
msgstream.foreach(rdd = {
if(rdd.count() 0){
val data = rdd.map(json = (json.has(entities),
json.length())).collect()
val entities: Double = data.count(t = t._1)
val fieldCounts = data.sortBy(_._2)
val minFields = fieldCounts(0)._2
val maxFields = fieldCounts(fieldCounts.size - 1)._2
val now = new java.util.Date()
val interval = (now.getTime() - startTime) / 1000
System.out.println(now.toString)
System.out.println(processing time: + interval + seconds)
System.out.println(total messages: + total.value)
System.out.println(deleted messages: + deleted.value)
System.out.println(message receipt rate: + (total.value/interval)
+ per second)
System.out.println(messages this interval: + data.length)
System.out.println(message fields varied between: + minFields +
and + maxFields)
System.out.println(fraction with entities is + (entities /
data.length))
}
}
)
ssc.start()
Re: No output from Spark Streaming program with Spark 1.0
Few more suggestions.
1. See the web ui, is the system running any jobs? If not, then you may
need to give the system more nodes. Basically the system should have more
cores than the number of receivers.
2. Furthermore there is a streaming specific web ui which gives more
streaming specific data.
On Fri, May 23, 2014 at 6:02 PM, Patrick Wendell pwend...@gmail.com wrote:
Also one other thing to try, try removing all of the logic form inside
of foreach and just printing something. It could be that somehow an
exception is being triggered inside of your foreach block and as a
result the output goes away.
On Fri, May 23, 2014 at 6:00 PM, Patrick Wendell pwend...@gmail.com
wrote:
Hey Jim,
Do you see the same behavior if you run this outside of eclipse?
Also, what happens if you print something to standard out when setting
up your streams (i.e. not inside of the foreach) do you see that? This
could be a streaming issue, but it could also be something related to
the way it's running in eclipse.
- Patrick
On Fri, May 23, 2014 at 2:57 PM, Jim Donahue jdona...@adobe.com wrote:
I¹m trying out 1.0 on a set of small Spark Streaming tests and am
running
into problems. Here¹s one of the little programs I¹ve used for a long
time ‹ it reads a Kafka stream that contains Twitter JSON tweets and
does
some simple counting. The program starts OK (it connects to the Kafka
stream fine) and generates a stream of INFO logging messages, but never
generates any output. :-(
I¹m running this in Eclipse, so there may be some class loading issue
(loading the wrong class or something like that), but I¹m not seeing
anything in the console output.
Thanks,
Jim Donahue
Adobe
val kafka_messages =
KafkaUtils.createStream[Array[Byte], Array[Byte],
kafka.serializer.DefaultDecoder, kafka.serializer.DefaultDecoder](ssc,
propsMap, topicMap, StorageLevel.MEMORY_AND_DISK)
val messages = kafka_messages.map(_._2)
val total = ssc.sparkContext.accumulator(0)
val startTime = new java.util.Date().getTime()
val jsonstream = messages.map[JSONObject](message =
{val string = new String(message);
val json = new JSONObject(string);
total += 1
json
}
)
val deleted = ssc.sparkContext.accumulator(0)
val msgstream = jsonstream.filter(json =
if (!json.has(delete)) true else { deleted += 1; false}
)
msgstream.foreach(rdd = {
if(rdd.count() 0){
val data = rdd.map(json = (json.has(entities),
json.length())).collect()
val entities: Double = data.count(t = t._1)
val fieldCounts = data.sortBy(_._2)
val minFields = fieldCounts(0)._2
val maxFields = fieldCounts(fieldCounts.size - 1)._2
val now = new java.util.Date()
val interval = (now.getTime() - startTime) / 1000
System.out.println(now.toString)
System.out.println(processing time: + interval + seconds)
System.out.println(total messages: + total.value)
System.out.println(deleted messages: + deleted.value)
System.out.println(message receipt rate: +
(total.value/interval)
+ per second)
System.out.println(messages this interval: + data.length)
System.out.println(message fields varied between: + minFields
+
and + maxFields)
System.out.println(fraction with entities is + (entities /
data.length))
}
}
)
ssc.start()
