[YARN-3797] NodeManager not blacklisting the disk (shuffle) with errors

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: nodemanager
• Assignee: Unassigned
• Reporter: Rajesh Balamohan
• Created: 11/Jun/15 09:16
• Updated: 10/Apr/18 21:34

Description

In a multi-node environment, one of the disk (where map outputs are written) in a node went bad. Errors are given below.

Info fld=0x9ad090a
sd 6:0:5:0: [sdf]  Add. Sense: Unrecovered read error
sd 6:0:5:0: [sdf] CDB: Read(10): 28 00 09 ad 09 08 00 00 08 00
end_request: critical medium error, dev sdf, sector 162334984
mpt2sas0: log_info(0x31080000): originator(PL), code(0x08), sub_code(0x0000)
sd 6:0:5:0: [sdf]  Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 6:0:5:0: [sdf]  Sense Key : Medium Error [current]
Info fld=0x9af8892
sd 6:0:5:0: [sdf]  Add. Sense: Unrecovered read error
sd 6:0:5:0: [sdf] CDB: Read(10): 28 00 09 af 88 90 00 00 08 00
end_request: critical medium error, dev sdf, sector 162498704
mpt2sas0: log_info(0x31080000): originator(PL), code(0x08), sub_code(0x0000)
mpt2sas0: log_info(0x31080000): originator(PL), code(0x08), sub_code(0x0000)
sd 6:0:5:0: [sdf]  Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 6:0:5:0: [sdf]  Sense Key : Medium Error [current]
Info fld=0x9af8892
sd 6:0:5:0: [sdf]  Add. Sense: Unrecovered read error
sd 6:0:5:0: [sdf] CDB: Read(10): 28 00 09 af 88 90 00 00 08 00
end_request: critical medium error, dev sdf, sector 162498704

Diskchecker would pass as the system allows to create directories and delete directories without issues. But data being served out can be corrupt and fetchers fail during CRC verification with unwanted delays and retries.

Ideally node manager should detect such errors and blacklist/remove those disks from NM.