Question

我需要帮助搜索HBase内容。我有一个HBase表'tblsearch'。

如何查看表模式（例如我们在MySQL中显示create table tbl_name）？如何查看表'tblsearch'的所有内容，其中ali值= 24146，其中date ='2014-02-08'

hbase(main):026:0> describe 'tblsearch'
DESCRIPTION                                                                                               ENABLED
 {NAME => 'tblsearch', FAMILIES => [{NAME => 'd', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'NON true
 E', REPLICATION_SCOPE => '0', VERSIONS => '3', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL    => '-
 1', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', ENCODE_ON_DISK => 'tr
 ue', BLOCKCACHE => 'false'}]}
1 row(s) in 0.1040 seconds

Scanning 5 rows from the table:

hbase(main):023:0> scan 'tblsearch', {'LIMIT'=>5}
ROW                                      COLUMN+CELL
 a24146_1371760717_J=K\xF6               column=d:ali, timestamp=1379351295242, value=24146
 a24146_1371760717_J=K\xF6               column=d:level, timestamp=1379351295242, value=yellow
 a24146_1371760717_J=K\xF6               column=d:message_template, timestamp=1379351295242,     value=ALI {ali} has no user priority value
 a24146_1371760717_\xE1\xF7\x01\x0F      column=d:ali, timestamp=1379351295243, value=24146
 a24146_1371760717_\xE1\xF7\x01\x0F      column=d:level, timestamp=1379351295243, value=yellow
 a24146_1371760717_\xE1\xF7\x01\x0F      column=d:message_template, timestamp=1379351295243, value=ALI {ali} has no user weight vector
 a24146_1371760724_\x08\x18\xC20         column=d:ali, timestamp=1379351295243, value=24146
 a24146_1371760724_\x08\x18\xC20         column=d:level, timestamp=1379351295243, value=green
 a24146_1371760724_\x08\x18\xC20         column=d:message_template, timestamp=1379351295243, value=ALI {ali} has been successfully allocated
 a24146_1371817802_X\xD4`\x8A            column=d:ali, timestamp=1379351295361, value=24146
 a24146_1371817802_X\xD4`\x8A            column=d:level, timestamp=1379351295361, value=yellow
 a24146_1371817802_X\xD4`\x8A            column=d:message_template, timestamp=1379351295361, value=ALI {ali} has no user priority value
 a24146_1371817802_\xD97\xBBe            column=d:ali, timestamp=1379351295362, value=24146
 a24146_1371817802_\xD97\xBBe            column=d:level, timestamp=1379351295362, value=yellow
 a24146_1371817802_\xD97\xBBe            column=d:message_template, timestamp=1379351295362, value=ALI {ali} has no user weight vector

Answer 1

我在这里看不到任何列日期。但是你可以在HBase过滤器的帮助下实现这一目标。 例如，如果您想要获取 ali = 24146 的所有行，您可以这样做：

HBase的（主）：001：0＆GT; import org.apache.hadoop.hbase.util.Bytes

HBase的（主）：002：0＆GT; import org.apache.hadoop.hbase.filter.SingleColumnValueFilter

HBase的（主）：003：0＆GT; import org.apache.hadoop.hbase.filter.BinaryComparator

HBase的（主）：004：0＆GT; import org.apache.hadoop.hbase.filter.CompareFilter

HBase的（主）：005：0＆GT; scan'tblsearch'，{FILTER =＆gt;   SingleColumnValueFilter.new（Bytes.toBytes（'d'），Bytes.toBytes（'ali'），   CompareFilter :: CompareOp.valueOf（ '平等'），   BinaryComparator.new（Bytes.toBytes（ '24146'）））}

HTH

Answer 2

你可以看到表'tblsearch'的所有内容，其中ali值= 24146，其中date ='2014-02-08'基于'tblsearch'表的rowkey，在将记录放入表中时定义或使用。

Answer 3

您可以在HBase Shell中使用以下命令。不需要导入，并且在0.94.6

中适用于我

scan 'tblsearch',FILTER=>"SingleColumnValueFilter('d','ali',=,'binary:24146') AND TimestampsFilter(1391167399643)"

搜索HBase表的内容

3 个答案: