Are multiple files stored in a single block?

Question

When I store many small files into HDFS, will they get stored in a single block?

In my opinion, these small files should get stored into a single block according to

Answer 1

each block belongs to only one file,just do like below: 1.use fsck command to get block info of file:

hadoop fsck /gavial/data/OB/AIR/PM25/201709/01/15_00.json -files -blocks

out put like this:

    /gavial/data/OB/AIR/PM25/201709/01/15_00.json 521340 bytes, 1 block(s):  OK
0. BP-1004679263-192.168.130.151-1485326068364:blk_1074920015_1179253 len=521340 repl=3

Status: HEALTHY
 Total size:    521340 B
 Total dirs:    0
 Total files:   1
 Total symlinks:        0
 Total blocks (validated):  1 (avg. block size 521340 B)
 Minimally replicated blocks:   1 (100.0 %)
 Over-replicated blocks:    0 (0.0 %)

block id is

blk_1074920015

2.use fsck command to show block status,out put like this

hdfs fsck -blockId blk_1074920015

Block Id: blk_1074920015
Block belongs to: /gavial/data/OB/AIR/PM25/201709/01/15_00.json
No. of Expected Replica: 3
No. of live Replica: 3
No. of excess Replica: 0
No. of stale Replica: 0
No. of decommission Replica: 0
No. of corrupted Replica: 0
Block replica on datanode/rack: datanode-5/default-rack is HEALTHY
Block replica on datanode/rack: datanode-1/default-rack is HEALTHY

obviously,the block belongs to only one file