Apache Kylin 1.3.0 发布， OLAP 分析引擎

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                　　Apache Kylin 1.3.0 发布了，Kylin 是一个开源的分布式的 OLAP 分析引擎，来自 eBay 公司开发，基于 Hadoop 提供 SQL 接口和 OLAP 接口，支持 TB 到 PB 级别的数据量。
　　Kylin 是：

• 　　超级快的 OLAP 引擎，具备可伸缩性
  
• 　　为 Hadoop 提供 ANSI-SQL 接口
  
• 　　交互式查询能力
  
• 　　MOLAP Cube
  
• 　　可与其他 BI 工具无缝集成，如 Tableau，而 Microstrategy 和 Excel 将很快推出
  　　
  

　　其他值得关注的特性包括：

• 　　作业管理和监控
  
• 　　压缩和编码的支持
  
• 　　Cube 的增量更新
  
• 　　Leverage HBase Coprocessor for query latency
  
• 　　Approximate Query Capability for distinct Count (HyperLogLog)
  
• 　　易用的 Web 管理、构建、监控和查询 Cube 的接口
  
• 　　Security capability to set ACL at Cube/Project Level
  
• 　　支持 LDAP 集成
  

　　改进日志：
　　新特性
　　* [KYLIN-579] - Unload table from Kylin
　　* [KYLIN-976] - Support Custom Aggregation Types
　　* [KYLIN-1054] - Support Hive client Beeline
　　* [KYLIN-1128] - Clone Cube Metadata
　　* [KYLIN-1186] - Support precise Count Distinct using bitmap (under limited conditions)
　　提升
　　* [KYLIN-955] - HiveColumnCardinalityJob should use configurations in conf/kylin_job_conf.xml
　　* [KYLIN-1014] - Support kerberos authentication while getting status from RM
　　* [KYLIN-1074] - Load hive tables with selecting mode
　　* [KYLIN-1082] - Hive dependencies should be add to tmpjars
　　* [KYLIN-1132] - make filtering input easier in creating cube
　　* [KYLIN-1201] - Enhance project level ACL
　　* [KYLIN-1211] - Add 'Enable Cache' button in System page
　　* [KYLIN-1234] - Cube ACL does not work
　　* [KYLIN-1240] - Fix link and typo in README
　　* [KYLIN-1244] - In query window, enable fast copy&paste by double clicking tables/columns' names.
　　* [KYLIN-1246] - get cubes API update - offset,limit not required
　　* [KYLIN-1251] - add toggle event for tree label
　　* [KYLIN-1259] - Change font/background color of job progress
　　* [KYLIN-1312] - Enhance DeployCoprocessorCLI to support Cube level filter
　　* [KYLIN-1317] - Kill underlying running hadoop job while discard a job
　　* [KYLIN-1323] - Improve performance of converting data to hfile
　　* [KYLIN-1333] - Kylin Entity Permission Control
　　* [KYLIN-1343] - Upgrade calcite version to 1.6
　　* [KYLIN-1365] - Kylin ACL enhancement
　　* [KYLIN-1368] - JDBC Driver is not generic to restAPI json result
　　Bug 修复
　　* [KYLIN-918] - Calcite throws "java.lang.Float cannot be cast to java.lang.Double" error while executing SQL
　　* [KYLIN-1075] - select [MeasureCol] from [FactTbl] is not supported
　　* [KYLIN-1078] - Cannot have comments in the end of New Query textbox
　　* [KYLIN-1104] - Long dimension value cause ArrayIndexOutOfBoundsException
　　* [KYLIN-1110] - can not see project options after clear brower cookie and cache
　　* [KYLIN-1159] - problem about kylin web UI
　　* [KYLIN-1214] - Remove "Back to My Cubes" link in non-edit mode
　　* [KYLIN-1215] - minor, update website member's info on community page
　　* [KYLIN-1230] - When CubeMigrationCLI copied ACL from one env to another, it may not work
　　* [KYLIN-1236] - redirect to home page when input invalid url
　　* [KYLIN-1250] - Got NPE when discarding a job
　　* [KYLIN-1254] - cube model will be overridden while creating a new cube with the same name
　　* [KYLIN-1260] - Job status labels are not in same style
　　* [KYLIN-1274] - Query from JDBC is partial results by default
　　* [KYLIN-1316] - Wrong label in Dialog CUBE REFRESH CONFIRM
　　* [KYLIN-1330] - UI create model: Press enter will go back to pre step
　　* [KYLIN-1331] - UI Delete Aggregation Groups: cursor disappeared after delete 1 dimension
　　* [KYLIN-1342] - Typo in doc
　　* [KYLIN-1354] - Couldn't edit a cube if it has no "partition date" set
　　* [KYLIN-1372] - Query using PrepareStatement failed with multi OR clause
　　* [KYLIN-1396] - minor bug in BigDecimalSerializer - avoidVerbose should be incremented each time when input scale is larger than given scale
　　* [KYLIN-1400] - kylin.metadata.url with hbase namespace problem
　　* [KYLIN-1402] - StringIndexOutOfBoundsException in Kylin Hive Column Cardinality Job

　　* [KYLIN-1412] - Widget>　　* [KYLIN-1419] - NullPointerException occurs when query from subqueries with order by

　　* [KYLIN-1423] - HBase>
　　* [KYLIN-1443] - For setting Auto Merge Time Ranges, before sending them to backend, the>　　* [KYLIN-1445] - Kylin should throw error if HIVE_CONF dir cannot be found
　　* [KYLIN-1456] - Shouldn't use "1970-01-01" as the default end date
　　* [KYLIN-1466] - Some environment variables are not used in bin/kylin.sh
　　* [KYLIN-1469] - Hive dependency jars are hard coded in test
　　详情请看：https://kylin.apache.org/docs/release_notes.html
　　
　　下载地址：https://kylin.apache.org/download/