hi,maillist: i try modify replica number on some dir but it seems not work ,anyone know why?
# sudo -u hdfs hadoop fs -setrep -R 2 /user/hive/warehouse/mytest Replication 2 set: /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 the file still store 3 replica ,but the echo number changed # hadoop fs -ls /user/hive/warehouse/mytest/dsp_request/2014-01-26 Found 1 items -rw-r--r-- 2 hdfs hdfs 17660 2014-01-26 18:34 /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 # sudo -u hdfs hdfs fsck /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 -files -blocks -locations Connecting to namenode via http://ch11:50070 FSCK started by hdfs (auth:SIMPLE) from /192.168.11.12 for path /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 at Thu Apr 10 09:39:51 CST 2014 /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 17660 bytes, 1 block(s): OK 0. BP-1043055049-192.168.11.11-1382442676609:blk_-9219869107960013037_1976591 len=17660 repl=3 [192.168.11.13:50010, 192.168.11.10:50010, 192.168.11.14:50010] i remove the file ,and upload new file ,as i understand ,the new file should be stored in 2 replica,but it still store 3 replica ,why? # sudo -u hdfs hadoop fs -rm -r -skipTrash /user/hive/warehouse/mytest/dsp_request/2014-01-26/* Deleted /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 # hadoop fs -put ./data_00000 /user/hive/warehouse/mytest/dsp_request/2014-01-26/ [root@ch12 ~]# hadoop fs -ls /user/hive/warehouse/mytest/dsp_request/2014-01-26 Found 1 items -rw-r--r-- 3 root hdfs 17660 2014-04-10 09:40 /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 # sudo -u hdfs hdfs fsck /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 -files -blocks -locations Connecting to namenode via http://ch11:50070 FSCK started by hdfs (auth:SIMPLE) from /192.168.11.12 for path /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 at Thu Apr 10 09:41:12 CST 2014 /user/hive/warehouse/mytest/dsp_request/2014-01-26/data_00000 17660 bytes, 1 block(s): OK 0. BP-1043055049-192.168.11.11-1382442676609:blk_6517693524032437780_8889786 len=17660 repl=3 [192.168.11.12:50010, 192.168.11.15:50010, 192.168.11.13:50010]