Re: Persist streams to text files
Hi ,
You can use FileUtil.copemerge API and specify the path to the folder where
saveAsTextFile is save the part text file.
Suppose your directory is /a/b/c/
use FileUtil.copeMerge(FileSystem of source, a/b/c, FileSystem of
destination, Path to the merged file say (a/b/c.txt), true(to delete the
original dir,null))
Thanks.
On Fri, Nov 21, 2014 at 11:31 AM, Jishnu Prathap [via Apache Spark User
List] ml-node+s1001560n19449...@n3.nabble.com wrote:
Hi I am also having similar problem.. any fix suggested..
*Originally Posted by GaganBM*
Hi,
I am trying to persist the DStreams to text files. When I use the inbuilt
API 'saveAsTextFiles' as :
stream.saveAsTextFiles(resultDirectory)
this creates a number of subdirectories, for each batch, and within each
sub directory, it creates bunch of text files for each RDD (I assume).
I am wondering if I can have single text files for each batch. Is there
any API for that ? Or else, a single output file for the entire stream ?
I tried to manually write from each RDD stream to a text file as :
stream.foreachRDD(rdd ={
rdd.foreach(element = {
fileWriter.write(element)
})
})
where 'fileWriter' simply makes use of a Java BufferedWriter to write
strings to a file. However, this fails with exception :
DStreamCheckpointData.writeObject used
java.io.BufferedWriter
java.io.NotSerializableException: java.io.BufferedWriter
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
.
Any help on how to proceed with this ?
The information contained in this electronic message and any attachments
to this message are intended for the exclusive use of the addressee(s) and
may contain proprietary, confidential or privileged information. If you are
not the intended recipient, you should not disseminate, distribute or copy
this e-mail. Please notify the sender immediately and destroy all copies of
this message and any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient
should check this email and any attachments for the presence of viruses.
The company accepts no liability for any damage caused by any virus
transmitted by this email.
www.wipro.com
--
If you reply to this email, your message will be added to the discussion
below:
http://apache-spark-user-list.1001560.n3.nabble.com/Re-Persist-streams-to-text-files-tp19449.html
To start a new topic under Apache Spark User List, email
ml-node+s1001560n1...@n3.nabble.com
To unsubscribe from Apache Spark User List, click here
http://apache-spark-user-list.1001560.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=1code=cHJhbm5veUBzaWdtb2lkYW5hbHl0aWNzLmNvbXwxfC0xNTI2NTg4NjQ2
.
NAML
http://apache-spark-user-list.1001560.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml
--
View this message in context:
http://apache-spark-user-list.1001560.n3.nabble.com/Re-Persist-streams-to-text-files-tp19449p19457.html
Sent from the Apache Spark User List mailing list archive at Nabble.com.
RE: Persist streams to text files
Hi
Thank you ☺Akhil it worked like charm…..
I used the file writer outside rdd.foreach that might be the reason for
nonserialisable exception….
Thanks Regards
Jishnu Menath Prathap
From: Akhil Das [mailto:ak...@sigmoidanalytics.com]
Sent: Friday, November 21, 2014 1:15 PM
To: Jishnu Menath Prathap (WT01 - BAS)
Cc: u...@spark.incubator.apache.org
Subject: Re: Persist streams to text files
Here's a quick version to store (append) in your local machine
val tweets = TwitterUtils.createStream(ssc, None)
val hashTags = tweets.flatMap(status = status.getText.split(
).filter(_.startsWith(#)))
hashTags.foreachRDD(rdds = {
rdds.foreach(rdd = {
val fw = new FileWriter(/home/akhld/tags.txt, true)
println(HashTag = + rdd)
fw.write(rdd + \n)
fw.close()
})
})
Thanks
Best Regards
On Fri, Nov 21, 2014 at 12:12 PM,
jishnu.prat...@wipro.commailto:jishnu.prat...@wipro.com wrote:
Hi Akhil
Thanks for reply
But it creates different directories ..I tried using filewriter but it shows
non serializable error..
val stream = TwitterUtils.createStream(ssc, None) //, filters)
val statuses = stream.map(
status = sentimentAnalyzer.findSentiment({
status.getText().replaceAll([^A-Za-z0-9 \\#], )
})
)
val line = statuses.foreachRDD(
rdd = {
rdd.foreach(
tweetWithSentiment = {
if(!tweetWithSentiment.getLine().isEmpty())
println(tweetWithSentiment.getCssClass() + for line := +
tweetWithSentiment.getLine())//Now I print in console but I need to update it
to a file in local machine
})
})
Thanks Regards
Jishnu Menath Prathap
From: Akhil Das
[mailto:ak...@sigmoidanalytics.commailto:ak...@sigmoidanalytics.com]
Sent: Friday, November 21, 2014 11:48 AM
To: Jishnu Menath Prathap (WT01 - BAS)
Cc: u...@spark.incubator.apache.orgmailto:u...@spark.incubator.apache.org
Subject: Re: Persist streams to text files
To have a single text file output for each batch you can repartition it to 1
and then call the saveAsTextFiles
stream.repartition(1).saveAsTextFiles(location)
On 21 Nov 2014 11:28,
jishnu.prat...@wipro.commailto:jishnu.prat...@wipro.com wrote:
Hi I am also having similar problem.. any fix suggested..
Originally Posted by GaganBM
Hi,
I am trying to persist the DStreams to text files. When I use the inbuilt API
'saveAsTextFiles' as :
stream.saveAsTextFiles(resultDirectory)
this creates a number of subdirectories, for each batch, and within each sub
directory, it creates bunch of text files for each RDD (I assume).
I am wondering if I can have single text files for each batch. Is there any API
for that ? Or else, a single output file for the entire stream ?
I tried to manually write from each RDD stream to a text file as :
stream.foreachRDD(rdd ={
rdd.foreach(element = {
fileWriter.write(element)
})
})
where 'fileWriter' simply makes use of a Java BufferedWriter to write strings
to a file. However, this fails with exception :
DStreamCheckpointData.writeObject used
java.io.BufferedWriter
java.io.NotSerializableException: java.io.BufferedWriter
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
.
Any help on how to proceed with this ?
The information contained in this electronic message and any attachments to
this message are intended for the exclusive use of the addressee(s) and may
contain proprietary, confidential or privileged information. If you are not the
intended recipient, you should not disseminate, distribute or copy this e-mail.
Please notify the sender immediately and destroy all copies of this message and
any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient should
check this email and any attachments for the presence of viruses. The company
accepts no liability for any damage caused by any virus transmitted by this
email.
www.wipro.comhttp://www.wipro.com
The information contained in this electronic message and any attachments to
this message are intended for the exclusive use of the addressee(s) and may
contain proprietary, confidential or privileged information. If you are not the
intended recipient, you should not disseminate, distribute or copy this e-mail.
Please notify the sender immediately and destroy all copies of this message and
any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient should
check this email and any attachments for the presence of viruses. The company
accepts no liability for any damage caused by any virus transmitted by this
email.
www.wipro.comhttp://www.wipro.com
The information contained in this electronic message and any attachments to
this message are intended for the exclusive use of the addressee(s) and may
contain proprietary, confidential or privileged information
Re: Persist streams to text files
To have a single text file output for each batch you can repartition it to
1 and then call the saveAsTextFiles
stream.repartition(1).saveAsTextFiles(location)
On 21 Nov 2014 11:28, jishnu.prat...@wipro.com wrote:
Hi I am also having similar problem.. any fix suggested..
*Originally Posted by GaganBM*
Hi,
I am trying to persist the DStreams to text files. When I use the inbuilt
API 'saveAsTextFiles' as :
stream.saveAsTextFiles(resultDirectory)
this creates a number of subdirectories, for each batch, and within each
sub directory, it creates bunch of text files for each RDD (I assume).
I am wondering if I can have single text files for each batch. Is there
any API for that ? Or else, a single output file for the entire stream ?
I tried to manually write from each RDD stream to a text file as :
stream.foreachRDD(rdd ={
rdd.foreach(element = {
fileWriter.write(element)
})
})
where 'fileWriter' simply makes use of a Java BufferedWriter to write
strings to a file. However, this fails with exception :
DStreamCheckpointData.writeObject used
java.io.BufferedWriter
java.io.NotSerializableException: java.io.BufferedWriter
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
.
Any help on how to proceed with this ?
The information contained in this electronic message and any attachments
to this message are intended for the exclusive use of the addressee(s) and
may contain proprietary, confidential or privileged information. If you are
not the intended recipient, you should not disseminate, distribute or copy
this e-mail. Please notify the sender immediately and destroy all copies of
this message and any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient
should check this email and any attachments for the presence of viruses.
The company accepts no liability for any damage caused by any virus
transmitted by this email.
www.wipro.com
RE: Persist streams to text files
Hi Akhil
Thanks for reply
But it creates different directories ..I tried using filewriter but it shows
non serializable error..
val stream = TwitterUtils.createStream(ssc, None) //, filters)
val statuses = stream.map(
status = sentimentAnalyzer.findSentiment({
status.getText().replaceAll([^A-Za-z0-9 \\#], )
})
)
val line = statuses.foreachRDD(
rdd = {
rdd.foreach(
tweetWithSentiment = {
if(!tweetWithSentiment.getLine().isEmpty())
println(tweetWithSentiment.getCssClass() + for line := +
tweetWithSentiment.getLine())//Now I print in console but I need to update it
to a file in local machine
})
})
Thanks Regards
Jishnu Menath Prathap
From: Akhil Das [mailto:ak...@sigmoidanalytics.com]
Sent: Friday, November 21, 2014 11:48 AM
To: Jishnu Menath Prathap (WT01 - BAS)
Cc: u...@spark.incubator.apache.org
Subject: Re: Persist streams to text files
To have a single text file output for each batch you can repartition it to 1
and then call the saveAsTextFiles
stream.repartition(1).saveAsTextFiles(location)
On 21 Nov 2014 11:28,
jishnu.prat...@wipro.commailto:jishnu.prat...@wipro.com wrote:
Hi I am also having similar problem.. any fix suggested..
Originally Posted by GaganBM
Hi,
I am trying to persist the DStreams to text files. When I use the inbuilt API
'saveAsTextFiles' as :
stream.saveAsTextFiles(resultDirectory)
this creates a number of subdirectories, for each batch, and within each sub
directory, it creates bunch of text files for each RDD (I assume).
I am wondering if I can have single text files for each batch. Is there any API
for that ? Or else, a single output file for the entire stream ?
I tried to manually write from each RDD stream to a text file as :
stream.foreachRDD(rdd ={
rdd.foreach(element = {
fileWriter.write(element)
})
})
where 'fileWriter' simply makes use of a Java BufferedWriter to write strings
to a file. However, this fails with exception :
DStreamCheckpointData.writeObject used
java.io.BufferedWriter
java.io.NotSerializableException: java.io.BufferedWriter
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
.
Any help on how to proceed with this ?
The information contained in this electronic message and any attachments to
this message are intended for the exclusive use of the addressee(s) and may
contain proprietary, confidential or privileged information. If you are not the
intended recipient, you should not disseminate, distribute or copy this e-mail.
Please notify the sender immediately and destroy all copies of this message and
any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient should
check this email and any attachments for the presence of viruses. The company
accepts no liability for any damage caused by any virus transmitted by this
email.
www.wipro.comhttp://www.wipro.com
The information contained in this electronic message and any attachments to
this message are intended for the exclusive use of the addressee(s) and may
contain proprietary, confidential or privileged information. If you are not the
intended recipient, you should not disseminate, distribute or copy this e-mail.
Please notify the sender immediately and destroy all copies of this message and
any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient should
check this email and any attachments for the presence of viruses. The company
accepts no liability for any damage caused by any virus transmitted by this
email.
www.wipro.com
Re: Persist streams to text files
Here's a quick version to store (append) in your local machine
val tweets = TwitterUtils.createStream(ssc, None)
val hashTags = tweets.flatMap(status = status.getText.split(
).filter(_.startsWith(#)))
hashTags.foreachRDD(rdds = {
rdds.foreach(rdd = {
*val fw = new FileWriter(/home/akhld/tags.txt, true)*
*println(HashTag = + rdd)*
*fw.write(rdd + \n)*
*fw.close()*
})
})
Thanks
Best Regards
On Fri, Nov 21, 2014 at 12:12 PM, jishnu.prat...@wipro.com wrote:
Hi Akhil
Thanks for reply
But it creates different directories ..I tried using filewriter but it
shows non serializable error..
*val* stream = TwitterUtils.createStream(ssc, None) //, filters)
*val* statuses = stream.map(
status = sentimentAnalyzer.findSentiment({
status.getText().replaceAll([^A-Za-z0-9 \\#], )
})
)
*val* line = statuses.foreachRDD(
rdd = {
rdd.foreach(
tweetWithSentiment = {
*if*(!tweetWithSentiment.getLine().isEmpty())
println(tweetWithSentiment.getCssClass() + for line :=
+ tweetWithSentiment.getLine())//*Now I print in console but I need to
update it to a file in local machine*
})
})
Thanks Regards
Jishnu Menath Prathap
*From:* Akhil Das [mailto:ak...@sigmoidanalytics.com]
*Sent:* Friday, November 21, 2014 11:48 AM
*To:* Jishnu Menath Prathap (WT01 - BAS)
*Cc:* u...@spark.incubator.apache.org
*Subject:* Re: Persist streams to text files
To have a single text file output for each batch you can repartition it to
1 and then call the saveAsTextFiles
stream.repartition(1).saveAsTextFiles(location)
On 21 Nov 2014 11:28, jishnu.prat...@wipro.com wrote:
Hi I am also having similar problem.. any fix suggested..
*Originally Posted by GaganBM*
Hi,
I am trying to persist the DStreams to text files. When I use the inbuilt
API 'saveAsTextFiles' as :
stream.saveAsTextFiles(resultDirectory)
this creates a number of subdirectories, for each batch, and within each
sub directory, it creates bunch of text files for each RDD (I assume).
I am wondering if I can have single text files for each batch. Is there
any API for that ? Or else, a single output file for the entire stream ?
I tried to manually write from each RDD stream to a text file as :
stream.foreachRDD(rdd ={
rdd.foreach(element = {
fileWriter.write(element)
})
})
where 'fileWriter' simply makes use of a Java BufferedWriter to write
strings to a file. However, this fails with exception :
DStreamCheckpointData.writeObject used
java.io.BufferedWriter
java.io.NotSerializableException: java.io.BufferedWriter
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
.
Any help on how to proceed with this ?
The information contained in this electronic message and any attachments
to this message are intended for the exclusive use of the addressee(s) and
may contain proprietary, confidential or privileged information. If you are
not the intended recipient, you should not disseminate, distribute or copy
this e-mail. Please notify the sender immediately and destroy all copies of
this message and any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient
should check this email and any attachments for the presence of viruses.
The company accepts no liability for any damage caused by any virus
transmitted by this email.
www.wipro.com
The information contained in this electronic message and any attachments
to this message are intended for the exclusive use of the addressee(s) and
may contain proprietary, confidential or privileged information. If you are
not the intended recipient, you should not disseminate, distribute or copy
this e-mail. Please notify the sender immediately and destroy all copies of
this message and any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient
should check this email and any attachments for the presence of viruses.
The company accepts no liability for any damage caused by any virus
transmitted by this email.
www.wipro.com
