[HBASE-15706] HFilePrettyPrinter should print out nicely formatted tags

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: HFile
• Hadoop Flags: Reviewed
• Assignee: Hua Xiang
• Reporter: Hua Xiang
• Created: 25/Apr/16 22:33
• Updated: 29/Apr/16 16:37
• Resolved: 29/Apr/16 03:54

Description

When I was using HFile to print out a rows with tags, the output is like:

hsun-MBP:hbase-2.0.0-SNAPSHOT hsun$ hbase org.apache.hadoop.hbase.io.hfile.HFile -f /tmp/71afa45b1cb94ea1858a99f31197274f -p
2016-04-25 11:40:40,409 WARN  [main] util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2016-04-25 11:40:40,580 INFO  [main] hfile.CacheConfig: CacheConfig:disabled
K: b/b:b/1461608231279/Maximum/vlen=0/seqid=0 V: 
K: b/b:b/1461608231278/Put/vlen=1/seqid=0 V: b T[0]: �
Scanned kv count -> 2

With attached patch, the print is now like:

2016-04-25 11:57:05,849 INFO  [main] hfile.CacheConfig: CacheConfig:disabled
K: b/b:b/1461609876838/Maximum/vlen=0/seqid=0 V: 
K: b/b:b/1461609876837/Put/vlen=1/seqid=0 V: b T[0]: [Tag type : 8, value : \x00\x0E\xEE\xEE]
Scanned kv count -> 2