[ https://issues.apache.org/jira/browse/HDDS-6256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Uma Maheswara Rao G updated HDDS-6256: -------------------------------------- Status: Patch Available (was: Open) > EC: Parity blocks are padded incorrectly with zeros to the chunk size > --------------------------------------------------------------------- > > Key: HDDS-6256 > URL: https://issues.apache.org/jira/browse/HDDS-6256 > Project: Apache Ozone > Issue Type: Sub-task > Reporter: Stephen O'Donnell > Assignee: Uma Maheswara Rao G > Priority: Major > Labels: pull-request-available > > I write a tiny key into a 3-2 bucket. Container group is still open - this > looks good 3 containers as expected: > {code:java} > Replicas: [State: OPEN; ReplicaIndex: 4; Origin: > 3fc2c737-83b1-4485-91ac-b771e41fa1dd; Location: > 3fc2c737-83b1-4485-91ac-b771e41fa1dd/ozone_datanode_1.ozone_default, > State: OPEN; ReplicaIndex: 5; Origin: 1be82529-d5f2-4c6b-8573-0bb75863ded1; > Location: 1be82529-d5f2-4c6b-8573-0bb75863ded1/ozone_datanode_4.ozone_default, > State: OPEN; ReplicaIndex: 1; Origin: e1d6ca08-d5eb-4e8a-b42a-bf1257e9f673; > Location: > e1d6ca08-d5eb-4e8a-b42a-bf1257e9f673/ozone_datanode_2.ozone_default]{code} > In the JSON: > > {code:java} > "bytesUsed" : 177, > "replicaIndex" : 1 > ... > "bytesUsed" : 1048576, > "replicaIndex" : 5 > ... > "bytesUsed" : 1048576, > "replicaIndex" : 4 {code} > So the parity should only have 177 bytes too, but it appears to have 1MB. > Checking the block file on disk, it is indeed 1MB: > {code:java} > bash-4.2$ cd > /data/hdds/hdds/CID-137befd9-f6ec-430b-b0e0-ee683ac1d987/current/containerDir0/3/ > bash-4.2$ ls > chunks metadata > bash-4.2$ cd chunks/ > bash-4.2$ ls > 109611004723200004.block > bash-4.2$ ls -al > total 1032 > drwxr-xr-x 2 hadoop users 4096 Feb 2 22:08 . > drwxr-xr-x 4 hadoop users 4096 Feb 2 22:08 .. > rw-rr- 1 hadoop users 1048576 Feb 2 22:08 109611004723200004.block{code} > So something is not correct with the write path here. Checking the block > contents, its all padded with zeros: > {code:java} > bash-4.2$ hexdump -C 109611004723200004.block > 00000000 e4 e5 e6 1a 10 1a 10 1a e4 07 24 25 21 d4 24 d3 |..........$%!.$.| > 00000010 25 da 2c 06 16 16 e4 07 24 25 21 d4 24 d3 25 da |%.,.....$%!.$.%.| > 00000020 2c eb 27 db 12 1b 24 25 21 d4 24 d3 25 da 2c eb |,.'...$%!.$.%.,.| > 00000030 27 db 12 1b 24 25 25 db d5 d4 21 d2 06 22 23 10 |'...$%%...!.."#.| > 00000040 10 16 16 10 07 27 db 12 1b 24 25 21 d4 24 d1 23 |.....'...$%!.$.#| > 00000050 2c 06 22 22 10 10 16 16 10 07 27 db 12 1b d0 21 |,.""......'....!| > 00000060 d4 da 2c db 2e 23 22 27 28 06 22 22 10 e5 16 16 |..,..#"'(.""....| > 00000070 e4 07 27 db 12 1b d4 24 24 d1 25 d7 23 da 06 22 |..'....$$.%.#.."| > 00000080 22 10 e5 16 16 e5 07 27 db 12 1b d4 24 24 2e 25 |"......'....$$.%| > 00000090 d8 2c 23 2e da 06 e4 17 e5 1a e4 12 e3 1a e4 12 |.,#.............| > 000000a0 10 1a e5 07 e6 e4 e7 11 d5 13 13 10 10 e3 d7 e3 |................| > 000000b0 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > 000000c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00100000{code} -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@ozone.apache.org For additional commands, e-mail: issues-h...@ozone.apache.org