I have some Hadoop SequenceFiles that contain key/value pairs of 2 Java
classes. The 2 classes each have many Java primitive types.
Class A - this is the key
Class B - this is the value
I need to store this in a table.
As I understand it, I have to:
1) Store this in an external t
I have a custom Writable called DigestWritable. The DigestWritable is
stored in a SequenceFile.
For illustration, assume it is like this:
public class DigestWritable implements org.apache.hadoop.io.Writable {
String str;
int I;
}
I started to write a SerDe in order to read the Diges
I have a sequence file that has custom Writables in it.
For illustration, assume the value in the SequenceFile is like this:
public class DigestWritable implements org.apache.hadoop.io.Writable {
String str;
int I;
}
I wrote a SerDe, expecting that the value passed into deseriali
Is it possible to specify multiple LOCATIONs for an external table.
For example, if I have sequence files in the following locations:
/user/abc
/user/def
How can I specify 2 or more hdfs_paths in the following.
create external table if not exists t8 (
str string, flagWord int
)
e sequence file does not need to be specified.
From: Rodriguez, John [mailto:jrodrig...@verisign.com]
Sent: Tuesday, September 14, 2010 11:08 PM
To: hive-user@hadoop.apache.org
Subject: question about reading a sequencefile
I have a sequence file that has custom Writables in it.
For illu
g...@gmail.com]
Sent: Wednesday, September 15, 2010 11:58 AM
To: hive-user@hadoop.apache.org
Subject: Re: multiple LOCATIONs for external table possible?
On Wed, Sep 15, 2010 at 12:45 PM, Rodriguez, John
wrote:
> Is it possible to specify multiple LOCATIONs for an external table.
>
>
>
TORED AS inputformat
'org.apache.hadoop.mapred.SequenceFileInputFormat'
outputformat
'org.apache.hadoop.mapred.SequenceFileOutputFormat'
location '/user/jrodrigu/hiveTables';
ALTER TABLE t10 ADD PARTITION (id=1) LOCATION
'/user/jrodrigu/hiveTables' PARTITION (id=2) LOCA
