;
>> And the alert() function could be anything triggering an email or sending an
>> SMS alert.
>>
>> Thanks
>> Best Regards
>>
>> On Sun, Mar 22, 2015 at 1:52 AM, Mohit Anchlia > <mailto:mohitanch...@gmail.com>> wrote:
>> Is there a
;)
> val dist = data.filter(_.contains("ERROR")).foreachRDD(rdd =>
> alert("Errors :" + rdd.count()))
>
> And the alert() function could be anything triggering an email or sending
> an SMS alert.
>
> Thanks
> Best Regards
>
> On Sun, Mar 22,
which you could do:
>>>
>>> val data = ssc.textFileStream("sigmoid/")
>>> val dist = data.filter(_.contains("ERROR")).foreachRDD(rdd =>
>>> alert("Errors :" + rdd.count()))
>>>
>>> And the alert() function co
I ran a spark streaming job.
100 executors
30G heap per executor
4 cores per executor
The version I used is 1.3.0-cdh5.1.0.
The job is reading from a directory on HDFS (with files incoming
continuously) and does some join on the data. I set batch interval to be 15
minutes and the job worked
I have two questions:
1) In a Spark Streaming program, after the various DStream transformations have
being setup,
the ssc.start() method is called to start the computation.
Can the underlying DAG change (ie. add another map or maybe a join) after
ssc.start() has been
called (and maybe
Hallo,
Only because you receive the log files hourly it means that you have to use
Spark Streaming. Spark streaming is often used if you receive new events
each minute /second potentially at an irregular frequency. Of course your
analysis window can be larger.
I think your use case justifies
Hi all,
I am using Spark Streaming to monitor an S3 bucket for objects that contain
JSON. I want
to import that JSON into Spark SQL DataFrame.
Here's my current code:
*from pyspark import SparkContext, SparkConf*
*from pyspark.streaming import StreamingContext*
*import json*
*from pyspar
Hi
I want to understand the flow of spark streaming with kafka.
In spark Streaming is the executor nodes at each run of streaming interval
same or At each stream interval cluster manager assigns new executor nodes
for processing this batch input. If yes then at each batch interval new
executors
Hi all,
I am working on a pipeline that needs to join two Spark streams. The input
is a stream of integers. And the output is the number of integer's
appearance divided by the total number of unique integers. Suppose the
input is:
1
2
3
1
2
2
There are 3 unique integers and 1 appears twice. Ther
Hi all,
I used sbt to package a code that uses spark-streaming-kafka. The packaging
succeeded. However, when I submitted to yarn, the job ran for 10 seconds
and there was an error in the log file as follows:
Caused by: java.lang.NoClassDefFoundError:
org/apache/spark/streaming/kafka/KafkaUtils
hi all
I am a newbie to Spark Streaming, and used Strom before.Have u test the
performance both of them and which one is better?
xichen_tju@126
Hi,
In the spark streaming paper, "slack time" has been suggested for delaying the
batch creation in case of external timestamps. I don't see any such option in
streamingcontext. Is it available in the API?
Also going through the previous posts, queueStream has been suggest
Does anyone here have a way to do Spark Streaming with external timing
for windows? Right now, it relies on the wall clock of the driver to
determine the amount of time that each batch read lasts.
We have a Kafka, and HDFS ingress into our Spark Streaming pipeline
where the events are annotated
Answers inline.
On Wed, Jul 16, 2014 at 5:39 PM, Bill Jay
wrote:
> Hi all,
>
> I am currently using Spark Streaming to conduct a real-time data
> analytics. We receive data from Kafka. We want to generate output files
> that contain results that are based on the data we receive
Hi Tathagata,
Thanks for your answer. Please see my further question below:
On Wed, Jul 16, 2014 at 6:57 PM, Tathagata Das
wrote:
> Answers inline.
>
>
> On Wed, Jul 16, 2014 at 5:39 PM, Bill Jay
> wrote:
>
>> Hi all,
>>
>> I am currently using Spark S
PM, Tathagata Das <
> tathagata.das1...@gmail.com> wrote:
>
>> Answers inline.
>>
>>
>> On Wed, Jul 16, 2014 at 5:39 PM, Bill Jay
>> wrote:
>>
>>> Hi all,
>>>
>>> I am currently using Spark Streaming to conduct a real-t
t; tathagata.das1...@gmail.com> wrote:
>>
>>> Answers inline.
>>>
>>>
>>> On Wed, Jul 16, 2014 at 5:39 PM, Bill Jay
>>> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I am currently using Spark Streaming to conduct
Hi all,
I have a question regarding Spark streaming. When we use the
saveAsTextFiles function and my batch is 60 seconds, Spark will generate a
series of files such as:
result-140614896, result-140614802, result-140614808, etc.
I think this is the timestamp for the beginning of each
ta,
>>
>>
>>
>>Thanks for your answer. Please see my further question below:
>>
>>
>>
>>
>>On Wed, Jul 16, 2014 at 6:57 PM, Tathagata Das
>>wrote:
>>
>>Answers inline.
>>>
>>>
>>>
>>>
>&
WHERE state='Active'")
> })
>
> result.print()
> //eventData.foreachRDD(rdd => registerRDDAsTable(rdd, "data"))
> ssc.start()
> ssc.awaitTermination()
>
>
>
>
>
> --
> View th
groupByKey() and I get:
<, Value1_summed by Keys>
Are there more efficient approaches I should be considering, such as
method.chaining or another technique to increase work flow efficiency?
Thanks for your feedback in advance.
DH
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as I start loading data into Kafka but the
3rd node remains free at 3G.
Have I misconfigured something? I followed the standalone setup and see 3
workers registered with all cores being reported as used.
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Hi,
How would you implement the batch layer of lamda architecture with
spark/spark streaming?
Thanks,
Ali
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Based on my understanding something like this doesn't seem to be possible out
of the box, but I thought I would write it up anyway in case someone has any
ideas.
We have conceptually one high volume input stream, each streaming job is either
interested in a subset of the stream or the entire st
Hello,
If I do:
DStream transform {
rdd.zipWithIndex.map {
Is the index guaranteed to be unique across all RDDs here?
}
}
Thanks,
-Soumitra.
Hi all,
I would like to ask some advice about resetting spark stateful operation.
so i tried like this:
JavaStreamingContext jssc = new JavaStreamingContext(context, new
Duration(5000));
jssc.remember(Duration(5*60*1000));
jssc.checkpoint(ApplicationConstants.HDFS_STREAM_DIRECTORIES);
JavaPairRec
I have been trying to understand how spark streaming and hbase connect, but
have not been successful. What I am trying to do is given a spark stream,
process that stream and store the results in an hbase table. So far this is
what I have:
import org.apache.spark.SparkConf
import
Hi,
Anyone have a stable streaming app running in "production"? Can you
share some overview of the app and setup like number of nodes, events
per second, broad stream processing workflow, config highlights etc?
Thanks,
Tim
-
To
Hello all,Spark newbie here.We are trying to use Spark Streaming
(unfortunately stuck on version 0.9.1 of Spark) to stream data out of
MongoDB.ReactiveMongo (http://reactivemongo.org/) is a scala driver that
enables you to stream a MongoDB capped collection (in our case, the
Oplog).Given that
,
"org.apache.spark" %% "spark-streaming" % "1.0.1" ,
"org.apache.spark" %% "spark-streaming-twitter" % "1.0.1"
)
The exception , I am getting ->
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apach
Hi Team,
Could you please respond on my below request.
Regards,
Rajesh
On Thu, Sep 25, 2014 at 11:38 PM, Madabhattula Rajesh Kumar <
mrajaf...@gmail.com> wrote:
> Hi Team,
>
> Can I use Actors in Spark Streaming based on events type? Could you please
> review below Test
any comment/feedback/advice on this is much appreciated! thanks.
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comment/feedback/advice on this is much appreciated! thanks.
>
>
>
> --
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> Sent from the Apache Spark User List maili
Here's an example:
https://github.com/OryxProject/oryx/blob/master/oryx-lambda/src/main/java/com/cloudera/oryx/lambda/BatchLayer.java#L131
On Mon, Oct 6, 2014 at 7:39 PM, Abraham Jacob wrote:
> Hi All,
>
> Would really appreciate from the community if anyone has implemented the
> saveAsNewAPIHad
tputFormat.class;
writableDStream.saveAsNewAPIHadoopFiles(dataDirString + "/oryx",
"data", keyWritableClass, messageWritableClass, outputFormatClass,
streamingContext.sparkContext().hadoopConfiguration());
I was just having a hard time with the OutputFormatClass parameter. The
scal
Hi All,
Continuing on this discussion... Is there a good reason why the def of
"saveAsNewAPIHadoopFiles" in
org/apache/spark/streaming/api/java/JavaPairDStream.scala
is defined like this -
def saveAsNewAPIHadoopFiles(
prefix: String,
suffix: String,
keyCl
Reading the Spark Streaming Programming Guide I found a couple of
interesting points. First of all, while talking about receivers, it says:
*"If the number of cores allocated to the application is less than or equal
to the number of input DStreams / receivers, then the system will receive
Hi Folks,
I am seeing some strange behavior when using the Spark Kafka connector in
Spark streaming.
I have a Kafka topic which has 8 partitions. I have a kafka producer that
pumps some messages into this topic.
On the consumer side I have a spark streaming application that that has 8
executors
ssage in context:
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Hi Saiph,
Patrick McFadin and Helena Edelson from DataStax taught a tutorial at NYC
Strata last week where they created a prototype Spark Streaming + Kafka
application for time series data.
You can see the code here:
https://github.com/killrweather/killrweather
On Tue, Oct 21, 2014 at 4:33 PM
ooqui
wrote:
> Hi Saiph,
>
> Patrick McFadin and Helena Edelson from DataStax taught a tutorial at NYC
> Strata last week where they created a prototype Spark Streaming + Kafka
> application for time series data.
>
> You can see the code here:
> https://github.com/killrweat
Do you know if the slides of that tutorial are
> available somewhere?
>
> Thanks!
>
> On Wed, Oct 22, 2014 at 6:58 PM, Sameer Farooqui
> wrote:
>
>> Hi Saiph,
>>
>> Patrick McFadin and Helena Edelson from DataStax taught a tutorial at NYC
>> Strata
You can check this project out
<https://github.com/sigmoidanalytics/spork-streaming/> (it is a bit
outdated, but works) It is basically the integration of Pig on
SparkStreaming. You can write pig scripts and they are underneath executed
as spark streaming job. To get you started quickly,
Hi tdas, is it possible to run spark 24/7, i am using updateStateByKey and i
am streaming 3lac records in 1/2 hr, i am not getting the correct result
also i am not not able to run spark streaming for 24/7 after hew hrs i get
array out of bound exception even if i am not streaming anything? btw
Hi,
Just wondering if you've seen the following error when reading from Kafka:
ERROR ReceiverTracker: Deregistered receiver for stream 0: Error starting
receiver 0 - java.lang.NoClassDefFoundError: scala/reflect/ClassManifest
at kafka.utils.Log4jController$.(Log4jController.scala:29)
at kafka.uti
Hi all,
I followed the guide here:
http://spark.apache.org/docs/latest/streaming-kinesis-integration.html
But got this error:
Exception in thread "main" java.lang.NoClassDefFoundError:
com/amazonaws/auth/AWSCredentialsProvider
Would you happen to know what dependency or jar is needed ?
Harold
urn Optional.of(newSum);
}
}
};
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I am trying to run the Spark streaming program as given in the Spark streaming
Programming
guide<https://spark.apache.org/docs/latest/streaming-programming-guide.html>,
in the interactive shell. I am getting an error as shown
here as an intermediate
step. It resumes the run on its ow
the intial startup
>From the error it appears that your application is unable to (re?)connect to
the master upon checkpoint restart -- I wonder if the reason it needs to
restart is that the master went down...
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Hi,
Trying to use spark streaming, but I am struggling with word count :(
I want consolidate output of the word count (not on a per window basis), so
I am using updateStateByKey(), but for some reason this is not working.
The function it self is not being invoked(do not see the sysout output on
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Hi,
I have been using spark streaming in standalone mode and now I want to
migrate to spark running on yarn, but I am not sure how you would you would
go about designating a specific node in the cluster to act as an avro
listener since I am using flume based push approach with spark.
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:
> As the Spark Streaming tuning guide indicates, the key indicators of a
> healthy streaming job are:
> - Processing Time
> - Total Delay
>
> The Spark UI page for the Streaming job [1] shows these two indicators but
> the metrics source for Spark Streaming (StreamingSource
ll when jobs are running in production.
>
> I've created Spark-4537 <https://issues.apache.org/jira/browse/SPARK-4537>
> to track this issue.
>
> -kr, Gerard.
>
> On Thu, Nov 20, 2014 at 9:25 PM, Gerard Maas
> wrote:
>
>> As the Spark Streaming tuning guide ind
I am trying to run network_wordcount.py example mentioned at
https://github.com/apache/spark/blob/master/examples/src/main/python/streaming/network_wordcount.py
on CDH5.2 Quickstart VM. Getting below error.
Traceback (most recent call last):
File "/usr/lib/spark/examples/lib/network_wordcoun
Hi, Dear Spark Streaming Developers and Users,
We are prototyping using spark streaming and hit the following 2 issues thatI
would like to seek your expertise.
1) We have a spark streaming application in scala, that reads data from Kafka
intoa DStream, does some processing and output a
Hi,
I'm looking for resources and examples for the deployment of spark streaming
in production. Specifically, I would like to know how high availability and
fault tolerance of receivers is typically achieved.
The workers are managed by the spark framework and are therefore fault
tol
Dear sir
I have tried a lot on this could you help me with this?
Data ingestion from MySql to Hive with spark- streaming?
Could you give me an overview.
Thanks and regards
Akash P
Which version of spark are you using?
On Tue, Sep 20, 2022, 1:57 PM Akash Vellukai
wrote:
> Hello,
>
>
> py4j.protocol.Py4JJavaError: An error occurred while calling o80.load. :
> java.lang.NoClassDefFoundError:
> org/apache/spark/sql/internal/connector/SimpleTableProvider
>
>
> May anyone hel
Im having some difficulty reliably restoring a streaming job from a checkpoint.
When restoring a streaming job constructed from the following snippet, I
receive NullPointerException's when `map` is called on the the restored RDD.
lazy val ssc = StreamingContext.getOrCreate(checkpointDir,
crea
Hello,
I am building a Spark streaming application that ingests data from an Amazon
Kinesis stream. My application keeps track of the minimum price over a window
for groups of similar tickets. When I deploy the application, I would like it
to start processing at the start of the previous
Hi,
I'm trying to use the Spark Sink with Flume but it seems I'm missing some
of the dependencies.
I'm running the following code:
./bin/spark-shell --master yarn --jars
/home/impact/flumeStreaming/spark-streaming-flume_2.10-1.6.1.jar,/home/impact/flumeStreaming/flume-ng-core-
I am trying the spark streaming and listening to a socket, I am using the
rawSocketStream method to create a receiver and a DStream. But when I print
the DStream I get the below exception.*Code to create a
DStream:*JavaSparkContext jsc = new JavaSparkContext("Master",
"app");
Hi all,
I am using Spark Streaming API (I'm on version 2.10 for spark and
streaming), and I am running into a function serialization issue that I do
not run into when using Spark in batch (non-streaming) mode.
If I wrote code like this:
def run(): Unit = {
val newStream = stream.
ream.defaultReadObject(ObjectInputStream.java:500)
at
org.apache.spark.Accumulable$$anonfun$readObject$1.apply$mcV$sp(Accumulators.scala:152)
at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1205)
... 30 more
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Hi,
I'm trying to run a simple spark streaming application with File Streaming
and its working properly but when I try to monitor the number of events in
the Streaming Ui it shows that as 0.Is this a issue and are there any plans
to fix this.
Regards,
SJ
ileSystem.java:328)
> at
> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2696)
> at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
> at
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2733)
> at org.apache.
che.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
> at
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2733)
> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2715)
> at org.apache.hadoop.fs.FileSystem.get(File
leSystem.java:94)
> at
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2733)
> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2715)
> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:382)
> at org.a
Hi,
yahoo benchmark uses redis with spark,
have a look at this
https://github.com/yahoo/streaming-benchmarks/blob/master/spark-benchmarks/src/main/scala/AdvertisingSpark.scala
On Tue, May 24, 2016 at 1:28 PM, Pariksheet Barapatre
wrote:
> Hello All,
>
> I am trying to use Redis as a data stor
Thanks Sachin. Link that you mentioned uses native connection library
JedisPool.
I am looking if I can use https://github.com/RedisLabs/spark-redis for same
functionality.
Regards
Pari
On 24 May 2016 at 13:33, Sachin Aggarwal wrote:
> Hi,
>
> yahoo benchmark uses redis with spark,
>
> have a l
/.
Regards,
Rasika.
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or while trying to consume message from Kafka
> through Spark streaming (Kafka direct API). This used to work OK when using
> Spark standalone cluster manager. We're just switching to using Cloudera 5.7
> using Yarn to manage Spark cluster and started to see the below error.
>
> Few de
Hi ,
Do we have a streaming version of Logistic Regression in Spark ? I can see
its there for the Linear Regression.
Has anyone used logistic regression on streaming data, it would be really
helpful if you share your insights on how to train the incoming data.
In my use case I am trying to use l
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Sorry, forgot to mention that I don't use broadcast variables. That's
why I'm puzzled here.
--
John Simon
On Thu, Jun 9, 2016 at 11:09 AM, John Simon wrote:
> Hi,
>
> I'm running Spark Streaming with Kafka Direct Stream, batch interval
> is 10 seconds.
> Afte
Could anyone answer my question?
_
From: Chen, Yan I
Sent: 2016, June, 14 1:34 PM
To: 'user@spark.apache.org'
Subject: restarting of spark streaming
Hi,
I notice that in the process of restarting, spark streaming will try to
recover/repl
Hi,
We have been using spark streaming for a little while now.
Until now, we were running our spark streaming jobs in spark 1.5.1 and it
was working well. Yesterday, we upgraded to spark 1.6.0 without any changes
in the code. But our streaming jobs are not working any more. We are
getting an
cheduler is getting
>>>> revamped now.
>>>>
>>>> Tim
>>>>
>>>> On Nov 28, 2015, at 7:31 PM, Renjie Liu
>>>> wrote:
>>>>
>>>> Hi, Nagaraj:
>>>> Thanks for the response, but this does not solve my
Hi,
How to visualize realtime data (in graph/chart) from spark streaming?
Any tools?
Best,
Patcharee
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Hi,
I have a streaming application with
- 1 sec interval
- accept data from a simulation through MulticastSocket
The simulation sent out data using multiple clients/threads every 1 sec
interval. The input rate accepted by the streaming looks strange.
- When clients = 10,000 the event rate raise
Hi,
I'm trying to get *FAIR *scheduling to work in a spark streaming app
(1.6.0).
I've found a previous mailing list where it is indicated to do:
dstream.foreachRDD { rdd =>
rdd.sparkContext.setLocalProperty("spark.scheduler.pool", "pool1") // set
the pool rdd.c
Anyone please help me out how to create a DStream from existing RDD. My
code is:
JavaSparkContext ctx = new JavaSparkContext(conf);JavaRDD rddd
= ctx.parallelize(arraylist);
Now i need to use these *rddd* as input to *JavaStreamingContext*.
Of cause. If you use a ThreadLocal in a long living thread and forget to
remove it, it's definitely a memory leak.
On Thu, Jan 28, 2016 at 9:31 PM, N B wrote:
> Hello,
>
> Does anyone know if there are any potential pitfalls associated with using
> ThreadLocal variables in
Thanks for the response Ryan. So I would say that it is in fact the purpose
of a ThreadLocal i.e. to have a copy of the variable as long as the thread
lives. I guess my concern is around usage of threadpools and whether Spark
streaming will internally create many threads that rotate between tasks
Spark Streaming uses threadpools so you need to remove ThreadLocal when
it's not used.
On Fri, Jan 29, 2016 at 12:55 PM, N B wrote:
> Thanks for the response Ryan. So I would say that it is in fact the
> purpose of a ThreadLocal i.e. to have a copy of the variable as long as the
>
SomeClass(); }
};
somefunc(p, d.get());
d.remove();
return p;
}; );
Will this make sure that all threads inside the worker clean up the
ThreadLocal once they are done with processing this task?
Thanks
NB
On Fri, Jan 29, 2016 at 1:00 PM, Shixiong(Ryan) Zhu wrote:
> Spark St
g this task?
>
> Thanks
> NB
>
>
> On Fri, Jan 29, 2016 at 1:00 PM, Shixiong(Ryan) Zhu <
> shixi...@databricks.com> wrote:
>
>> Spark Streaming uses threadpools so you need to remove ThreadLocal when
>> it's not used.
>>
>> On Fri, Jan 29,
> ThreadLocal once they are done with processing this task?
>>
>> Thanks
>> NB
>>
>>
>> On Fri, Jan 29, 2016 at 1:00 PM, Shixiong(Ryan) Zhu <
>> shixi...@databricks.com> wrote:
>>
>>> Spark Streaming uses threadpools so you need
t;>> somefunc(p, d.get());
>>> d.remove();
>>> return p;
>>> }; );
>>>
>>> Will this make sure that all threads inside the worker clean up the
>>> ThreadLocal once they are done with processing this task?
>>>
>>> Thank
d = new ThreadLocal<>() {
>>>> public SomeClass initialValue() { return new SomeClass(); }
>>>> };
>>>> somefunc(p, d.get());
>>>> d.remove();
>>>> return p;
>>>> }; );
>>>>
>>
Hi,
I am new in spark. I wanted to do spark streaming setup to retrieve key
value pairs of below format files:
file: info1
Note: Each info file will have around of 1000 of these records. And our
system continuously generating info files. So Through spark streaming i
wanted to aggregate result
t;>>>> dstream.map( p -> { ThreadLocal d = new ThreadLocal<>() {
>>>>> public SomeClass initialValue() { return new SomeClass(); }
>>>>> };
>>>>> somefunc(p, d.get());
>>>>> d.remove();
>>&
You may want to have a look at spark druid project already in progress:
https://github.com/SparklineData/spark-druid-olap
You can also have a look at SnappyData
<https://github.com/SnappyDataInc/snappydata>, which is a low latency store
tightly integrated with Spark, Spark SQL and Spark Str
d-olap
>
> You can also have a look at SnappyData
> <https://github.com/SnappyDataInc/snappydata>, which is a low latency
> store tightly integrated with Spark, Spark SQL and Spark Streaming. You can
> find the 0.1 Preview release's documentation here.
> <htt
park druid project already in progress:
>> https://github.com/SparklineData/spark-druid-olap
>>
>> You can also have a look at SnappyData
>> <https://github.com/SnappyDataInc/snappydata>, which is a low latency
>> store tightly integrated with Spark, Spark S
I was wondering if there is there any way to skip batches with zero events
when streaming?
By skip I mean avoid the empty rdd from being created at all?
Hi guys,
I'm making some tests with Spark and Kafka using a Python script. I use the
second method that doesn't need any receiver (Direct Approach). It should adapt
the number of RDDs to the number of partitions in the topic. I'm trying to
verify it. What's the easiest way to verify it ? I also
Hi,
I want to kill a Spark Streaming job gracefully, so that whatever Spark has
picked from Kafka have processed. My Spark version is: 1.6.0
When i tried killing a Spark Streaming Job from Spark UI dosen't stop app
completely. In Spark-UI job is moved to COMPLETED section, but in l
call for getting offsets of each partition separately or in single
call it gets all partitions new offsets ? I mean will reducing no of
partitions oin kafka help improving the performance?
On Mon, Jul 20, 2015 at 4:52 PM, Shushant Arora
wrote:
> Hi
>
> 1.I am using spark streamin
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