iozone command: iozone -c -s 12g -r 4k -i6 -i7 -+n -w -f ./write_test.out
stg1 local ext4:
KB reclen fwrite fread 12582912 4 189072 8765324
stg2 local hdfs replica2 : (50-100% fuse, 20-50% datanode)
KB reclen fwrite fread 12582912 4 75143 112906
stg1 hdfs client replica2 : (write: 50-100% fuse, 20-50% datanode - max. 20% wa; read: 50% fuse, 5-10% datanode - max. 4% wa)
KB reclen fwrite fread 12582912 4 77281 99237
iozone command: iozone -c -s 32g -r 4k -i6 -i7 -+n -w -f ./write_test.out
stg1 hdfs client: (write: 50-100% fuse, 20-50% datanode - max. 20% wa; read: 50% fuse, 5-10% datanode - max. 4% wa)
KB reclen fwrite fread 33554432 4 70600 93569
stg1 local ext4:
KB reclen fwrite fread 33554432 4 162836 199328
stg2 local hdfs replica 2: (50-100% fuse, 20-50% datanode)
KB reclen fwrite fread 33554432 4 67116 120027
Namenode kiesés esetén azonnal IO error a klienseken.