Hive 1.0 正式版发布，数据仓库平台
3月21日 深圳 OSC 源创会开始报名罗，送华为海思开发板Apache Hive 1.0.0 正式发布了。该版本原本是要命名为 Hive 0.14.1，但是团队感觉到了该用 1.x.y 的方式命名的时候了。不过该版本改变的内容并不多，值得关注的有两个：
[*] 为 HiveMetaStoreClient 定义 API
[*] 移除 HiveServer 1，全面使用 HiveServer 2
Hive 1.0 版本完整的改进记录包括：
Bug
[*] - Index creation on a skew table fails
[*] - Drop cascade database fails when the db has any tables with indexes
[*] - ORC file and struct column names are case sensitive
[*] - HS2 & Metastore using SASL out of memory error when curl sends a get request
[*] - SerDe Properties are not considered by show create table Command
[*] - IN operator for partition column fails when the partition column type is DATE
[*] - Add batch retrieve partition objects for metastore direct sql
[*] - schematool fails on Postgres versions < 9.2
[*] - HMS on Oracle incompatibility
[*] - Table statistic collection on counter failed due to table name character case.
[*] - Hive 14 upgrade scripts can fail for statistics if database was created using auto-create
[*] - handle Derby and Oracle errors with joins and filters in Direct SQL in a invalid-DB-specific path
[*] - Querying partition does not work with JDO enabled against PostgreSQL
[*] - CBO skipped due to SemanticException: Line 0:-1 Both left and right aliases encountered in JOIN 'avg_cs_ext_discount_amt'
[*] - Obsolete default values in webhcat-default.xml
[*] - Dynamic partition pruning can result in NPE during query compilation
[*] - Remove SSLv2Hello from list of disabled protocols
[*] - hcatalog process don't exit because of non daemon thread
[*] - Switch to Tez 0.5.2
[*] - Vectorization on partitioned table throws ArrayIndexOutOfBoundsException when partitions are not of same #of columns
[*] - errors when selecting a struct field within an array from ORC based tables
[*] - Switch to calcite 0.9.2
[*] - incorrect upgrade script for Oracle (13->14)
[*] - non-synchronized access to split list in OrcInputFormat
[*] - Some Vectorized String CONCAT expressions result in runtime error Vectorization: Unsuported vector output type: StringGroup
[*] - Mapjoin with LateralViewJoin generates wrong plan in Tez
[*] - HIVE-8876 also affects Postgres < 9.2
[*] - Delta files created by hive hcatalog streaming cannot be compacted
[*] - Vectorized IF expr broken for the scalar and scalar case
[*] - join38.q (without map join) produces incorrect result when testing with multiple reducers
[*] - Join tests fail on Tez
[*] - TezJobMonitor in-place updates logs too often to logfile
[*] - select constant in union all followed by group by gives wrong result
[*] - OrcFileMergeOperator may create merge file that does not match properties of input files
[*] - Rename "Tez File Merge Work" to smaller name
[*] - Fix for HIVE-8735 is incorrect (stats with long paths)
[*] - Potential NPE in OrcStruct for list and map types
[*] - Query may generate different results depending on the number of reducers
[*] - union all query in cbo test has undefined ordering
[*] - Backport HIVE-8827 (Remove SSLv2Hello from list of disabled protocols) to 0.14 branch
[*] - HiveOnTez: mix of union all, distinct, group by generates error
[*] - HIVE_LOCKS uses int instead of bigint hive-txn-schema-0.14.0.mssql.sql
[*] - stats19 test is environment-dependant
[*] - Place an upper bound for SARG CNF conversion
[*] - Vectorized Coalesce for strings is broken
[*] - Change default tez install directory to use /tmp instead of /user and create the directory if it does not exist
[*] - HiveServer2 leaks FileSystem objects in FileSystem.CACHE
[*] - java.lang.ClassCastException: org.apache.hadoop.hive.serde2.io.HiveVarcharWritable cannot be cast to org.apache.hadoop.hive.common.type.HiveVarchar when joining tables
[*] - Cached expression feature broken in one case
[*] - move Microsoft copyright to NOTICE file
[*] - Export of a large table causes OOM in Metastore and Client
[*] - Intermittent NPE in SessionHiveMetaStoreClient.alterTempTable
[*] - Enhance retry logic wrt DB access in TxnHandler
[*] - Backport: Fastpath for limited fetches from unpartitioned tables
[*] - NPE in org.apache.hadoop.hive.metastore.txn.TxnHandler.determineDatabaseProduct()
[*] - RetryingMetaStoreClient does not retry JDOExceptions
[*] - sql std auth should disallow built-in udfs that allow any java methods to be called
[*] - schematool is broken in hive 1.0.0
Improvement
[*] - Make HiveMetaStoreClient a public API
[*]
- Check>
Task
[*] - Delete Hiveserver1
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