Hive 1.0.0發布
美國時間2015年2月4日，Hive 1.0.0正式發布了。該版本是Apache Hive九年來工作的認可，并且開發者們正在繼續開發。Apache Hive 1.0.0版本本來是要命名為Hive 0.14.1的，但是社區感覺是時候以1.x.y結構來命名。
雖然被叫做1.0.0版本，但是其中的改變范圍很少，主要有兩個改變：1、開始為HiveMetaStoreClient定義公開的
API(HIVE-3280)；2、HiveServer 1被移除(HIVE-6977)。API文檔正在開始，并且會在HIVE-9363里面繼續。
HiveServer 1的移除是Hive向企業版準備的重要一步。HiveServer 2在兩年半年前由Cloudera貢獻給Hive社區的，并且使得Hive支持JDBC、ODBC和細粒度的權限控制。
對于CLI用戶來說，遷移到HiveServer 2將需要使用Beeline。Cloudera和Intel將繼續投入巨資在Beeline和HiveServer 2上，來使得這個過渡變得更加簡單。
下一個Hive主要版本0.15.0將會命名為1.1.0。我們最想要的Hive-on-Apache Spark 將會在Hive 1.1.0中發布，這個版本正在開發中。
Hive 1.0.0版本主要修改的Bug和提升請參見下面列表：
Bug
[HIVE-5631] – Index creation on a skew table fails
[HIVE-5664] – Drop cascade database fails when the db has any tables with indexes
[HIVE-6198] – ORC file and struct column names are case sensitive
[HIVE-6468] – HS2 & Metastore using SASL out of memory error when curl sends a get request
[HIVE-7270] – SerDe Properties are not considered by show create table Command
[HIVE-8099] – IN operator for partition column fails when the partition column type is DATE
[HIVE-8295] – Add batch retrieve partition objects for metastore direct sql
[HIVE-8374] – schematool fails on Postgres versions < 9.2
[HIVE-8485] – HMS on Oracle incompatibility
[HIVE-8706] – Table statistic collection on counter failed due to table name character case.
[HIVE-8715] – Hive 14 upgrade scripts can fail for statistics if database was created using auto-create
[HIVE-8739] – handle Derby and Oracle errors with joins and filters in Direct SQL in a invalid-DB-specific path
[HIVE-8784] – Querying partition does not work with JDO enabled against PostgreSQL
[HIVE-8805] – CBO skipped due to SemanticException: Line 0:-1 Both
left and right aliases encountered in JOIN ‘avg_cs_ext_discount_amt’
[HIVE-8807] – Obsolete default values in webhcat-default.xml
[HIVE-8811] – Dynamic partition pruning can result in NPE during query compilation
[HIVE-8827] – Remove SSLv2Hello from list of disabled protocols
[HIVE-8830] – hcatalog process don’t exit because of non daemon thread
[HIVE-8845] – Switch to Tez 0.5.2
[HIVE-8866] – Vectorization on partitioned table throws
ArrayIndexOutOfBoundsException when partitions are not of same #of
columns
[HIVE-8870] – errors when selecting a struct field within an array from ORC based tables
[HIVE-8873] – Switch to calcite 0.9.2
[HIVE-8876] – incorrect upgrade script for Oracle (13->14)
[HIVE-8880] – non-synchronized access to split list in OrcInputFormat
[HIVE-8886] – Some Vectorized String CONCAT expressions result in
runtime error Vectorization: Unsuported vector output type: StringGroup
[HIVE-8888] – Mapjoin with LateralViewJoin generates wrong plan in Tez
[HIVE-8947] – HIVE-8876 also affects Postgres < 9.2
[HIVE-8966] – Delta files created by hive hcatalog streaming cannot be compacted
[HIVE-9003] – Vectorized IF expr broken for the scalar and scalar case
[HIVE-9025] – join38.q (without map join) produces incorrect result when testing with multiple reducers
[HIVE-9038] – Join tests fail on Tez
[HIVE-9051] – TezJobMonitor in-place updates logs too often to logfile
[HIVE-9053] – select constant in union all followed by group by gives wrong result
[HIVE-9067] – OrcFileMergeOperator may create merge file that does not match properties of input files
[HIVE-9090] – Rename “Tez File Merge Work” to smaller name
[HIVE-9108] – Fix for HIVE-8735 is incorrect (stats with long paths)
[HIVE-9111] – Potential NPE in OrcStruct for list and map types
[HIVE-9112] – Query may generate different results depending on the number of reducers
[HIVE-9114] – union all query in cbo test has undefined ordering
[HIVE-9126] – Backport HIVE-8827 (Remove SSLv2Hello from list of disabled protocols) to 0.14 branch
[HIVE-9141] – HiveOnTez: mix of union all, distinct, group by generates error
[HIVE-9155] – HIVE_LOCKS uses int instead of bigint hive-txn-schema-0.14.0.mssql.sql
[HIVE-9162] – stats19 test is environment-dependant
[HIVE-9166] – Place an upper bound for SARG CNF conversion
[HIVE-9168] – Vectorized Coalesce for strings is broken
[HIVE-9205] – Change default tez install directory to use /tmp instead of /user and create the directory if it does not exist
[HIVE-9234] – HiveServer2 leaks FileSystem objects in FileSystem.CACHE
[HIVE-9249] – java.lang.ClassCastException:
org.apache.hadoop.hive.serde2.io.HiveVarcharWritable cannot be cast to
org.apache.hadoop.hive.common.type.HiveVarchar when joining tables
[HIVE-9278] – Cached expression feature broken in one case
[HIVE-9317] – move Microsoft copyright to NOTICE file
[HIVE-9359] – Export of a large table causes OOM in Metastore and Client
[HIVE-9361] – Intermittent NPE in SessionHiveMetaStoreClient.alterTempTable
[HIVE-9390] – Enhance retry logic wrt DB access in TxnHandler
[HIVE-9401] – Backport: Fastpath for limited fetches from unpartitioned tables
[HIVE-9404] – NPE in org.apache.hadoop.hive.metastore.txn.TxnHandler.determineDatabaseProduct()
[HIVE-9436] – RetryingMetaStoreClient does not retry JDOExceptions
[HIVE-9473] – sql std auth should disallow built-in udfs that allow any java methods to be called
[HIVE-9514] – schematool is broken in hive 1.0.0
Improvement
[HIVE-3280] – Make HiveMetaStoreClient a public API
[HIVE-8933] – Check release builds for SNAPSHOT dependencies
Task
[HIVE-6977] – Delete Hiveserver1
轉載自過往記憶（http://www.iteblog.com/）