I wrote a mapper like this:
@Override
protected void map(VarLongWritable userId, RecommendedItemsWritable recommendations, Context ctx) throws IOException,
InterruptedException {
List<RecommendedItem> items = recommendations.getRecommendedItems();
for (RecommendedItem item : items) {
long userID = Long.valueOf(userId.toString().trim());
System.out.println(userID);
ctx.write(new LongWritable(userID), new Text(item.getItemID() + "," + item.getValue()));
}
}
and it generated the following content:
1 ,105,3.8652005
1 ,106,3.7047918
1 ,104,3.6800702
2 ,106,2.7261393
2 ,105,2.4083052
2 ,107,2.0
3 ,106,3.5539715
3 ,102,3.4113002
3 ,103,3.323024
4 ,107,4.674651
4 ,105,4.371781
4 ,102,4.0743575
5 ,107,3.754705
actually I just want to load the generated file into hive table.
but with the tab space, the value in the hive table is wrong.
So is there any way to remove the tab space in the file?