Correct myself:
For the SparkContext#wholeTextFile, the RDD's elements are kv pairs, the key is
the file path, and the value is the file content
So,for the SparkContext#wholeTextFile, the RDD has already carried the file
information.
bit1...@163.com
From: Saisai Shao
Date: 2015-04-29 15:50
To: Akhil Das
CC: bit1...@163.com; Vadim Bichutskiy; lokeshkumar; user
Subject: Re: Re: Spark streaming - textFileStream/fileStream - Get file name
Yes, looks like a solution but quite tricky. You have to parse the debug string
to get the file name, also relies on HadoopRDD to get the file name :)
2015-04-29 14:52 GMT+08:00 Akhil Das <ak...@sigmoidanalytics.com>:
It is possible to access the filename, its a bit tricky though.
val fstream = ssc.fileStream[LongWritable, IntWritable,
SequenceFileInputFormat[LongWritable, IntWritable]]("/home/akhld/input/")
fstream.foreach(x =>{
//You can get it with this object.
println(x.values.toDebugString)
} )
Thanks
Best Regards
On Wed, Apr 29, 2015 at 8:33 AM, bit1...@163.com <bit1...@163.com> wrote:
For the SparkContext#textFile, if a directory is given as the path parameter
,then it will pick up the files in the directory, so the same thing will occur.
bit1...@163.com
From: Saisai Shao
Date: 2015-04-29 10:54
To: Vadim Bichutskiy
CC: bit1...@163.com; lokeshkumar; user
Subject: Re: Re: Spark streaming - textFileStream/fileStream - Get file name
I think it might be useful in Spark Streaming's file input stream, but not sure
is it useful in SparkContext#textFile, since we specify the file by our own, so
why we still need to know the file name.
I will open up a JIRA to mention about this feature.
Thanks
Jerry
2015-04-29 10:49 GMT+08:00 Vadim Bichutskiy <vadim.bichuts...@gmail.com>:
I was wondering about the same thing.
Vadim
ᐧ
On Tue, Apr 28, 2015 at 10:19 PM, bit1...@163.com <bit1...@163.com> wrote:
Looks to me that the same thing also applies to the SparkContext.textFile or
SparkContext.wholeTextFile, there is no way in RDD to figure out the file
information where the data in RDD is from
bit1...@163.com
From: Saisai Shao
Date: 2015-04-29 10:10
To: lokeshkumar
CC: spark users
Subject: Re: Spark streaming - textFileStream/fileStream - Get file name
I think currently there's no API in Spark Streaming you can use to get the file
names for file input streams. Actually it is not trivial to support this, may
be you could file a JIRA with wishes you want the community to support, so
anyone who is interested can take a crack on this.
Thanks
Jerry
2015-04-29 0:13 GMT+08:00 lokeshkumar <lok...@dataken.net>:
Hi Forum,
Using spark streaming and listening to the files in HDFS using
textFileStream/fileStream methods, how do we get the fileNames which are
read by these methods?
I used textFileStream which has file contents in JavaDStream and I got no
success with fileStream as it is throwing me a compilation error with spark
version 1.3.1.
Can someone please tell me if we have an API function or any other way to
get the file names that these streaming methods read?
Thanks
Lokesh
--
View this message in context:
http://apache-spark-user-list.1001560.n3.nabble.com/Spark-streaming-textFileStream-fileStream-Get-file-name-tp22692.html
Sent from the Apache Spark User List mailing list archive at Nabble.com.
---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscr...@spark.apache.org
For additional commands, e-mail: user-h...@spark.apache.org
邮件带有附件预览链接，若您转发或回复此邮件时不希望对方预览附件，建议您手动删除链接。
共有 1 个附件
image.png(80K) 极速下载 在线预览
