-Re: Load table sorted by key
Adam Kawa 2012-10-24, 18:31
Rows in HBase are sorted lexicographically, so that 1 precedes 10 and 100.
You need to
a) ORDER library BY id in Pig script or
b) pad your HBase rowkey with zeros e.g. 001, 010, 100, 101 before
loading it in Pig (but I will require re-write of the HBase table,
since each row can not be simply updated, but will have to be
re-insterted into the table)
2012/10/24 HAJIHASHEMI, ZAHRA (AG/1000) <[EMAIL PROTECTED]>:
> I have a table in hbase that I want to load all records sorted by row key which is an integer number.
> Here is my code:
> library = LOAD 'discovery_rnaseq_library' USING org.apache.pig.backend.hadoop.hbase.HBaseStorage('A:COMMON_NAME A:SCIENTIFIC_NAME A:GENETIC_BACKGROUND A:TISSUE,'-loadKey true') as (id:int, COMMON_NAME:chararray, SCIENTIFIC_NAME:chararray, GENETIC_BACKGROUND:chararray, TISSUE:chararray);
> I want it to be sorted based on (id:int) in increasing order. But, what it does is like this:
> 1 soybean Glycine max A3525 leaf
> 10 soybean Glycine max A3525 root
> 100 soybean Glycine max A3244 root
> 101 soybean Glycine max 80% A3525 + 20% Opal
> I appreciate any help.
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