RE: Will different files in HDFS trigger different mapper

2013-10-02 Thread Sourygna Luangsay
de 2013 22:22 To: user@hadoop.apache.org Subject: Will different files in HDFS trigger different mapper Hi, I have a question related to how the mapper generated for the input files from HDFS. I understand the split and blocks concept in the HDFS, but my originally understanding is that one map

Will different files in HDFS trigger different mapper

2013-10-02 Thread java8964 java8964
Hi, I have a question related to how the mapper generated for the input files from HDFS. I understand the split and blocks concept in the HDFS, but my originally understanding is that one mapper will only process data from one file in HDFS, no matter how small this file it is. Is that correct? T