Question

协处理器定义为：

    @Override
    public void preGetOp(ObserverContext<RegionCoprocessorEnvironment> c, Get get, List<Cell> result) throws IOException {
    if (Bytes.equals(get.getRow(), ADMIN)) {//ADMIN:"admin"
        Cell cell = CellBuilderFactory.create(CellBuilderType.DEEP_COPY)
                .setFamily(COLUMN_FAMILY)
                .setQualifier(COLUMN)
                .setTimestamp(System.currentTimeMillis())
                .setType(Cell.Type.Put)
                .setValue(VALUE)
                .build();
        result.add(cell);
        c.bypass();
     }
    }

并且已正确设置协处理器：

hbase(main):003:0> describe 'users'
Table users is ENABLED                                                                                                               
users, {TABLE_ATTRIBUTES => {coprocessor$1 => 
'file:/home/hadoop/IdeaProjects/hbasedemo/target/hbasedemo- 
1.0.jar|com.zhi.hbaseclient.
RegionObserverExample|1073741823|'}                                                                                                  
COLUMN FAMILIES DESCRIPTION                                                                                                          
{NAME => 'personalDet', VERSIONS => '1', EVICT_BLOCKS_ON_CLOSE => 
'false', NEW_VERSION_BEHAVIOR => 'false', KEEP_DELETED_CELLS => 'FA
LSE', CACHE_DATA_ON_WRITE => 'false', DATA_BLOCK_ENCODING => 'NONE', 
TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0',
BLOOMFILTER => 'ROW', CACHE_INDEX_ON_WRITE => 'false', IN_MEMORY => 
'false', CACHE_BLOOMS_ON_WRITE => 'false', PREFETCH_BLOCKS_ON_OP
EN => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLOCKSIZE 
=> '65536'}                                                    
{NAME => 'salaryDet', VERSIONS => '1', EVICT_BLOCKS_ON_CLOSE => 
'false', NEW_VERSION_BEHAVIOR => 'false', KEEP_DELETED_CELLS => 'FALS
E', CACHE_DATA_ON_WRITE => 'false', DATA_BLOCK_ENCODING => 'NONE', TTL 
=> 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0', B
LOOMFILTER => 'ROW', CACHE_INDEX_ON_WRITE => 'false', IN_MEMORY => 
'false', CACHE_BLOOMS_ON_WRITE => 'false', PREFETCH_BLOCKS_ON_OPEN
=> 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLOCKSIZE => 
'65536'}                                                      
2 row(s)
Took 0.0161 seconds

但执行后获得'users'，'admin'，则admin行的信息与预期相反：

hbase(main):004:0> get 'users','admin'
COLUMN                             CELL                                                                                              
 personalDet:lastname              timestamp=1545129509443, value=Admin                                                              
 personalDet:name                  timestamp=1545129509443, value=Admin                                                              
1 row(s)
Took 0.0202 seconds

在这种情况下有什么我忽略的结果吗？

java api设置的hbase 2.1.1协处理器不起作用

0 个答案: