hbase的timestamp怎么换算 java

Posted 2023-02-19

hbase shell中timestamp转为可读格式
将hbase shell的timestamp转为可读。下面的示例将-ROOT-表的列info:serverstartcode的timestamp和value转成可读格式。
hbase(main):001:0> scan '-ROOT-'
ROW COLUMN+CELL
.META.,,1 column=info:regioninfo, timestamp=1340249081981, value=NAME => '.META.,,
1', STARTKEY => '', ENDKEY => '', ENCODED => 1028785192,
.META.,,1 column=info:server, timestamp=1341304672637, value=Hadoop46:60020
.META.,,1 column=info:serverstartcode, timestamp=1341304672637, value=1341301228326
.META.,,1 column=info:v, timestamp=1340249081981, value=\x00\x00
1 row(s) in 1.3230 seconds

hbase(main):002:0> import java.util.Date
=> Java::JavaUtil::Date
hbase(main):003:0> Date.new(1341304672637).toString()
=> "Tue Jul 03 16:37:52 CST 2012"
hbase(main):004:0> Date.new(1341301228326).toString()
=> "Tue Jul 03 15:40:28 CST 2012"

在shell中，如果有可读日期，能否转成long类型呢？

hbase(main):005:0> import java.text.SimpleDateFormat
=> Java::JavaText::SimpleDateFormat
hbase(main):006:0> import java.text.ParsePosition
=> Java::JavaText::ParsePosition

hbase(main):015:0> SimpleDateFormat.new("yy/MM/dd").parse("12/07/03",ParsePosition.new(0)).getTime()
=> 1341244800000 参考技术A List scans = new ArrayList ...加入多个scan TableMapReduceUtil.initTableMapperJob(scans, MyMapper.class, ImmutableBytesWritable.class, MyoutputValue.class, job);