Many thanks Jakob.
So it basically boils down to this demarcation as suggested which looks
clearer
val errlog = sc.textFile("/unix_files/*.ksh")
errlog.filter(line => line.contains("sed")).collect().foreach(line =>
println(line))
Regards,
Mich
On 10/02/2016 23:21, Jakob Odersky wrote:
> Hi Mich,
> your assumptions 1 to 3 are all correct (nitpick: they're method
> *calls*, the methods being the part before the parentheses, but I
> assume that's what you meant). The last one is also a method call but
> uses syntactic sugar on top: `foreach(println)` boils down to
> `foreach(line => println(line))`.
>
> On an unrelated side-note, I would suggest you add a period between
> every method call, it makes things easier to read and is actually
> required in certain circumstances. Specifically I would add a period
> before collect() and foreach().
>
> best,
> --Jakob
>
> On Wed, Feb 10, 2016 at 2:35 PM, Mich Talebzadeh
> <[email protected]> wrote:
> Hi Chandeep Many thanks for your help In the line below errlog.filter(line =>
> line.contains("sed"))collect()foreach(println) Can you please clarify the
> components with the correct naming as I am new to Scala errlog --> is the
> RDD? filter(line => line.contains("sed")) is a method collect() is another
> method ? foreach (println) ? Thanks On 10/02/2016 21:28, Chandeep Singh
> wrote: Hi Mich, If you would like to print everything to the console you
> could - errlog.filter(line => line.contains("sed"))collect()foreach(println)
> or you could always save to a file using any of the saveAs methods. Thanks,
> Chandeep On Wed, Feb 10, 2016 at 8:14 PM,
> <[email protected]> wrote: Hi, I have a bunch of
> files stored in hdfs /unit_files directory in total 319 files scala> val
> errlog = sc.textFile("/unix_files/*.ksh") scala> errlog.filter(line =>
> line.contains("sed"))count() res104: Long = 1113 So it returns 1113 instances
> the word "sed" If I want to see the collection I can do
scala> errlog.filter(line => line.contains("sed"))collect() res105:
Array[String] = Array(" DSQUERY=${1} ; DBNAME=${2} ; ERROR=0 ;
PROGNAME=$(basename $0 | sed -e s/.ksh//)", # . in environment based on
argument for script., " exec sp_spaceused", " exec sp_spaceused",
PROGNAME=$(basename $0 | sed -e s/.ksh//), " BACKUPSERVER=$5 # Server that is
used to load the transaction dump", " BACKUPSERVER=$5 # Server that is used to
load the transaction dump", " BACKUPSERVER=$5 # Server that is used to load the
transaction dump", " cat $TMPDIR/${DBNAME}_trandump.sql | sed
s/${DSQUERY}/${REMOTESERVER}/ > $TMPDIR/${DBNAME}_trandump.tmpsql", cat
$TMPDIR/${DBNAME}_tran_transfer.sql | sed s/${DSQUERY}/${REMOTESERVER}/ >
$TMPDIR/${DBNAME}_tran_transfer.tmpsql, PROGNAME=$(basename $0 | sed -e
s/.ksh//), " B... scala> Now is there anyway I can retrieve all these instances
or perhaps they are all wrapped up and I only see few lines? Thanks, Mich -- Dr
Mich Talebzadeh LinkedIn
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