Asynchronous HBase client for Node.js, pure JavaScript implementation.
- Current State: Full tests on HBase
0.94.0and0.94.16 - Java hbase-client
- [√] 0.94.x
- [√] 0.94.0
- [√] 0.94.16
- 0.95.x
- 0.96.x
$ npm install hbase-client --save- Create a hbase client through zookeeper:
var HBase = require('hbase-client');
var client = HBase.create({
zookeeperHosts: [
'127.0.0.1:2181' // only local zookeeper
],
zookeeperRoot: '/hbase-0.94.16',
});- Put a data row to hbase:
client.putRow('someTableName', 'rowkey1', {'f1:name': 'foo name', 'f1:age': '18'}, function (err) {
console.log(err);
});- Get the row we put:
client.getRow('someTableName', 'rowkey1', ['f1:name', 'f1:age'], function (err, row) {
console.log(row);
});- Delete the row we put:
client.deleteRow('someTableName', 'rowkey1', function (err) {
console.log(err);
});var HBase = require('hbase-client');
var client = HBase.create({
zookeeperHosts: [
'127.0.0.1:2181', '127.0.0.1:2182',
],
zookeeperRoot: '/hbase-0.94',
});
// Get `f1:name, f2:age` from `user` table.
var param = new HBase.Get('foo');
param.addColumn('f1', 'name');
param.addColumn('f1', 'age');
client.get('user', param, function (err, result) {
console.log(err);
var kvs = result.raw();
for (var i = 0; i < kvs.length; i++) {
var kv = kvs[i];
console.log('key: `%s`, value: `%s`', kv.toString(), kv.getValue().toString());
}
});client.getRow(table, row, ['f:name', 'f:age'], function (err, row) {
row.should.have.keys('f:name', 'f:age');
});
// return all columns, like `select *`
client.getRow(table, row, function (err, row) {
row.should.have.keys('f:name', 'f:age', 'f:gender');
});
client.getRow(table, row, '*', function (err, row) {
row.should.have.keys('f:name', 'f:age', 'f:gender');
});var put = new HBase.Put('foo');
put.add('f1', 'name', 'foo');
put.add('f1', 'age', '18');
client.put('user', put, function (err) {
console.log(err);
});client.putRow(table, row, {'f1:name': 'foo name', 'f1:age': '18'}, function (err) {
should.not.exists(err);
});var del = new Delete(rowkey);
del.deleteColumns('f', 'name-t');
client.delete(table, del, function (err, result) {
//TODO:...
});var del = new Delete(rowkey);
del.deleteFamily('f');
client.delete(table, del, function (err, result) {
//TODO:...
});var tableName = 'user_search';
var rowkey = 'rowkeyyyyyy';
client.deleteRow(tableName, rowkey, function (err) {
//TODO:...
});var rows = ['row1', 'row2'];
var columns = ['f:col1', 'f:col2'];
client.mget(tableName, rows, columns, function (err, results){
//TODO:...
});var rows = [{row: 'rowkey1', 'f:col1': 'col_value'}, {row: 'rowkey2', 'f:col1': 'col_value'}];
client.mput(tableName, rows, function (err, results) {
//TODO:...
});var rowKeys = ['rowkey1', 'rowkey2'];
client.mdelete(tableName, rowKeys, function (err, results) {
//TODO:...
});Java code:
FilterList filterList = new FilterList({operator: FilterList.Operator.MUST_PASS_ALL});
filterList.addFilter(new FirstKeyOnlyFilter());
filterList.addFilter(new KeyOnlyFilter());
Scan scan = new Scan(Bytes.toBytes("scanner-row0"));
scan.setFilter(filterList);Nodejs code:
var filters = require('hbase').filters;
var filterList = new filters.FilterList({operator: filters.FilterList.Operator.MUST_PASS_ALL});
filterList.addFilter(new filters.FirstKeyOnlyFilter());
filterList.addFilter(new filters.KeyOnlyFilter());
var scan = new Scan('scanner-row0');
scan.setFilter(filterList);
client.getScanner('user', scan, function (err, scanner) {\
var index = 0;
var next = function (numberOfRows) {
scanner.next(numberOfRows, function (err, rows) {
// console.log(rows)
should.not.exists(err);
if (rows.length === 0) {
index.should.equal(5);
return scanner.close(done);
}
rows.should.length(1);
var closed = false;
rows.forEach(function (row) {
var kvs = row.raw();
var r = {};
for (var i = 0; i < kvs.length; i++) {
var kv = kvs[i];
kv.getRow().toString().should.equal('scanner-row' + index++);
kv.toString().should.include('/vlen=0/');
console.log(kv.getRow().toString(), kv.toString())
}
});
if (closed) {
return scanner.close(done);
}
next(numberOfRows);
});
};
next(1);
});- [√] support
put - [√] benchmark
- [√] more stable
- [√] support
delete - [√] multi actions
- [√] multi get
- [√] multi put
- [√] multi delete
- [√] fail retry
- filters
- [√] FilterList
- [√] FirstKeyOnlyFilter
- [√] KeyOnlyFilter
@see docs/benchmark.md
Thanks for @haosdent support the test hbase clusters environment and debug helps.
$ git summary
project : node-hbase-client
repo age : 1 year, 7 months
active : 70 days
commits : 195
files : 297
authors :
155 fengmk2 79.5%
20 tangyao 10.3%
15 Martin Cizek 7.7%
1 coolme200 0.5%
1 Alsotang 0.5%
1 不四 0.5%
1 Lukas Benes 0.5%
1 Vaclav Loffelmann 0.5%(The MIT License)
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