[HBASE-16704] Scan will be broken while working with DBE and KeyValueCodecWithTags

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Anoop Sam John
• Reporter: Yu Sun
• Created: 25/Sep/16 02:05
• Updated: 26/Sep/16 19:39
• Resolved: 26/Sep/16 17:03

Description

scan will always broken if we set LIMIT more than 1 with rs hbase.client.rpc.codec set to org.apache.hadoop.hbase.codec.KeyValueCodecWithTags.

How to reproduce:
1. 1 master + 1 rs, codec use KeyValueCodecWithTags.
2. create a table table_1024B_30g，1 cf and with only 1 qualifier, then load some data with ycsb，. Use Diff DataBlockEncoding
3. scan 'table_1024B_30g',

{LIMIT => 2, STARTROW => 'user5499'}

, STARTROW is set any valid start row.
4. scan failed.

this should be bug in KeyValueCodecWithTags, after some investigations, I found some the key not serialized correctly.

Issue Links

• is broken by: HBASE-13754 Allow non KeyValue Cell types also to oswrite