Hi all... I have a question. in the cassandra wordcount mapreduce with
cql3, I want to get a string column and a float (or double) column as map
input key and value. I mean I want to get date column of type string as key
and temprature column of type float as value. but when I println value of
Hi,
per default, the key of a row is not deleted, if all columns were
deleted. I tried to figure out why, but I didn't find an answer, except
that it is 'intended'. Why is that intended? And is there a possibility
to manually delete the row key?
Regards
Sebastian
Couple of things which I could I think of. Other might have better ideas.
1- The exception is about encoding mismatch. Do you know what is your
source files's encoding and what is your system's default? E.g. it can be
ISO8859-1 in Windows, UTF-8 in Linux etc.and your file has something else.
You
Hi.. thanks for your reply shahab..
I don't know what is source file encoding, I export the table in mysql as
csv file and import it in cassandra. in both mysql and cassandra the
temprature column type is float. I don't know how should set them to UTF8..
for your 2nd topic... no I'm not sure it is
It will be deleted after a compaction.
Sent from my iPhone
On 05 Oct 2013, at 07:29, Sebastian Schmidt isib...@gmail.com wrote:
Hi,
per default, the key of a row is not deleted, if all columns were
deleted. I tried to figure out why, but I didn't find an answer, except
that it is
Am 06.10.2013 00:00, schrieb Cem Cayiroglu:
It will be deleted after a compaction.
Sent from my iPhone
On 05 Oct 2013, at 07:29, Sebastian Schmidt isib...@gmail.com wrote:
Hi,
per default, the key of a row is not deleted, if all columns were
deleted. I tried to figure out why, but I
Yes you can:
http://hbase.apache.org/book/regions.arch.html#compaction
http://hbase.apache.org/book/important_configurations.html (Managed
Compaction section)
Regards,
Shahab
On Sat, Oct 5, 2013 at 6:02 PM, Sebastian Schmidt isib...@gmail.com wrote:
Am 06.10.2013 00:00, schrieb Cem
Sorry, I replied to the wrong list with HBase info.
Here is Cassandra's link about invoking compaction manually through nodetool
http://www.datastax.com/documentation/cassandra/1.2/webhelp/index.html#cassandra/tools/toolsNodetool_r.html?pagename=docsversion=1.2file=references/nodetool
Regards,
