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
