HFile属性查看

 当生成完成一个HFile后，如果你不想因为出错而重做数据，建议在bulkimport之前，查看一下hfile

hbase提供了一个查看HFile属性的包 org.apache.hadoop.hbase.io.hfile.HFile

$hbase org.apache.hadoop.hbase.io.hfile.HFile

usage: HFile [-a] [-b] [-e] [-f <arg>] [-j] [-k] [-m] [-p] [-r <arg>] [-s

       <arg>] [-v]

 -a,--checkfamily       Enable family check

 -b,--printblocks       Print block index meta data

 -e,--printkey          Print keys

 -f,--file <arg>        File to scan. Pass full-path; e.g.

                        hdfs://a:9000/hbase/.META./12/34

 -j,--json              Print in JSON format

 -k,--checkrow          Enable row order check; looks for out-of-order

                        keys

 -m,--printmeta         Print meta data of file

 -p,--printkv           Print key/value pairs

 -r,--region <arg>      Region to scan. Pass region name; e.g. '.META.,,1'

 -s,--seekToRow <arg>   Seek to this row and print all the kvs for this

                        row only

 -v,--verbose           Verbose output; emits file and meta data

                        delimiters

 

 例如使用-p打印kv，示例如下

hbase org.apache.hadoop.hbase.io.hfile.HFile -f /home/xxxxx/scan-xxxx-xxxx-xxxx-xxxx/attr/e8b8a5e0d19a4f7ca342d92d50371929  -p  

 

K: http://com.book108.www/search.asp/attr:uniq/1358155195054/Put/vlen=23 V: http://www.book108.com/

K: http://com.book108.www/search.asp?flag=11&flag2=?/attr:uniq/1358155195120/Put/vlen=48 V: http://www.book108.com/search.asp?flag=11&flag2=

K: http://com.book108.www/search.asp?flag=3&flag2=?/attr:uniq/1358155195121/Put/vlen=47 V: http://www.book108.com/search.asp?flag=3&flag2=

K: http://com.book108.www/search.asp?flag=4&flag2=%A7%B3?/attr:uniq/1358155195121/Put/vlen=53 V: http://www.book108.com/search.asp?flag=4&flag2=%A7%B3

K: http://com.book108.www/search.asp?flag=4&flag2=?/attr:uniq/1358155195121/Put/vlen=47 V:  http://www.book108.com/search.asp?flag=4&flag2=

 

选自HBase权威指南（HBase The Definitive Guide） P331

 

转载于:https://www.cnblogs.com/clj37573/archive/2013/01/14/2860175.html