RowMutations mutations = new RowMutations(row);
//add new columns
Put put = new Put(row);
put.add(cf, col1, v1);
put.add(cf, col2, v2);
Delete delete = new Delete(row);
delete.deleteFamily(cf1, now);
//delete column family and add new columns to same family
mutations.add(delete);
mutations.add(put);
table.mutateRow(mutations);
1条答案
按热度按时间yqyhoc1h1#
checkandput-根据传递的compareop将值与来自hbase的当前值进行比较。如果期望值相等,则compareop=equals将值添加到put对象。
checkandmutate-根据传递的compareop将值与hbase中的当前值进行比较。compareop=equals如果期望值相等,则将值添加到rowmutation对象。
您可以将多个put和delete对象按照您希望在hbase中执行变异的顺序添加到rowmutation对象中
按放和删的顺序排列
检查和变异https://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/table.html#checkandmutate-byte:a-byte:一个-byte:a-org.apache.hadoop.hbase.filter.comparefilter.compareop-byte:a-org.apache.hadoop.hbase.client.row文件-
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https://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/table.html#checkandput-byte:a-byte:一个-byte:a-org.apache.hadoop.hbase.filter.comparefilter.compareop-byte:a-org.apache.hadoop.hbase.client.put-