Author: hyunsik
Date: Mon Oct 5 02:39:53 2015
New Revision: 10707
Log:
Tajo release 0.11.0-rc1
Added:
dev/tajo/tajo-0.11.0-rc1/
dev/tajo/tajo-0.11.0-rc1/relnotes.html
dev/tajo/tajo-0.11.0-rc1/tajo-0.11.0-src.tar.gz (with props)
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dev/tajo/tajo-0.11.0-rc1/tajo-0.11.0.tar.gz (with props)
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dev/tajo/tajo-0.11.0-rc1/tajo-0.11.0.tar.gz.md5
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dev/tajo/tajo-0.11.0-rc1/tajo-jdbc-0.11.0.jar (with props)
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dev/tajo/tajo-0.11.0-rc1/tajo-jdbc-0.11.0.jar.md5
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+<html>
+<head>
+<title>Release Notes - Tajo - Version 0.11.0</title>
+</head>
+
+<body>
+<h1>Release Notes - Tajo - Version 0.11.0</h1>
+
+<h2>Changes since Tajo 0.10.0</h2>
+
+<h2> Sub-task
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-921'>TAJO-921</a>] -
Add STDDEV_SAMP and STDDEV_POP window functions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-923'>TAJO-923</a>] -
Add VAR_SAMP and VAR_POP window functions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1260'>TAJO-1260</a>]
- Add ALTER TABLE ADD/DROP PARTITION statement to parser
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1284'>TAJO-1284</a>]
- Add alter partition method to CatalogStore
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1329'>TAJO-1329</a>]
- Improve Schema class to support nested struct support
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1337'>TAJO-1337</a>]
- Implements common modules to handle RESTful API
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1338'>TAJO-1338</a>]
- Defines RESTful API for Clients
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1345'>TAJO-1345</a>]
- Implement logical plan part and DDL executor for alter partition.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1346'>TAJO-1346</a>]
- Create dynamic partitions to CatalogStore by running insert query or
CTAS query.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1351'>TAJO-1351</a>]
- Resolve findbug warnings on Tajo Common Module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1353'>TAJO-1353</a>]
- Nested record support in CREATE TABLE statement
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1357'>TAJO-1357</a>]
- Resolve findbugs warnings on Tajo Catalog Modules
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1359'>TAJO-1359</a>]
- Add nested field projector and language extension to project nested
record
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1362'>TAJO-1362</a>]
- Resolve findbug warnings on Tajo Core Module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1392'>TAJO-1392</a>]
- Resolve findbug warnings on Tajo Plan Module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1393'>TAJO-1393</a>]
- Resolve findbug warnings on Tajo Cli Module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1437'>TAJO-1437</a>]
- Resolve findbug warnings on Tajo JDBC Module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1464'>TAJO-1464</a>]
- Add ORCFileScanner to read ORCFile table
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1465'>TAJO-1465</a>]
- Add ORCFileAppender to write into ORCFile table
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1484'>TAJO-1484</a>]
- Apply on ColPartitionStoreExec
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1493'>TAJO-1493</a>]
- Make partition pruning based on catalog informations
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1496'>TAJO-1496</a>]
- Remove legacy CSVFile
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1514'>TAJO-1514</a>]
- Distinguish UNION and UNION ALL
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1525'>TAJO-1525</a>]
- Implement INTERSECT [ALL] physical operator
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1529'>TAJO-1529</a>]
- Implement json_extract_path_text(string, string) function
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1599'>TAJO-1599</a>]
- Implement NodeResourceManager and Status updater
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1603'>TAJO-1603</a>]
- Refactor StorageManager
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1613'>TAJO-1613</a>]
- Rename StorageManager to Tablespace
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1614'>TAJO-1614</a>]
- Configuration format proposal for generic storage support
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1615'>TAJO-1615</a>]
- Implement TaskManager
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1616'>TAJO-1616</a>]
- Implement TablespaceManager to load Tablespaces
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1617'>TAJO-1617</a>]
- Storage configuration reader
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1641'>TAJO-1641</a>]
- Add window function documentation
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1652'>TAJO-1652</a>]
- Automatic metadata registeration from underlying storages
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1658'>TAJO-1658</a>]
- Filter push down to underlying storages
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1663'>TAJO-1663</a>]
- Change the variable name storeType to dataFormat
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1670'>TAJO-1670</a>]
- Refactor client errors and exceptions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1673'>TAJO-1673</a>]
- Implement recover partitions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1684'>TAJO-1684</a>]
- CREATE EXTERNAL TABLE should allows just a path.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1691'>TAJO-1691</a>]
- Refactor visitors and planner to throw TajoException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1693'>TAJO-1693</a>]
- Rearrange metric names
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1694'>TAJO-1694</a>]
- Add cluster resource metrics
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1723'>TAJO-1723</a>]
- INSERT INTO statement should allow nested fields as target columns
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1735'>TAJO-1735</a>]
- Implement MetadataProvider and LinkedMetadataManager
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1737'>TAJO-1737</a>]
- Implement SQL Parser rule for Map type
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1739'>TAJO-1739</a>]
- Add a statement for adding partition to TajoDump
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1748'>TAJO-1748</a>]
- Refine client APIs to throw specific exceptions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1749'>TAJO-1749</a>]
- Refine JDBC exceptions to better handle exceptional cases.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1754'>TAJO-1754</a>]
- Implement several functions to handle json array
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1758'>TAJO-1758</a>]
- Some TajoRuntimeException should be restored as TajoException in
client side
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1787'>TAJO-1787</a>]
- Remove unused and legacy exceptions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1824'>TAJO-1824</a>]
- Remove partition_keys table from information_schema
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1826'>TAJO-1826</a>]
- Revert 'refining code for Parquet 1.8.1'
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1841'>TAJO-1841</a>]
- Eliminate explicit diamond expressions in tajo-{algebra,rpc}
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1853'>TAJO-1853</a>]
- Add tablespace syntax to the CREATE TABLE section of DDL page
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1887'>TAJO-1887</a>]
- Disable the alter table add partition statement temporarily.
+</li>
+</ul>
+
+<h2> Bug
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1146'>TAJO-1146</a>]
- TajoWorkerResources are occasionally not released after the query
completion relating to semaphore condition.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1147'>TAJO-1147</a>]
- Simple query doesn't work in Web UI
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1277'>TAJO-1277</a>]
- GreedyHeuristicJoinOrderAlgorithm sometimes wrongly assumes
associativity of joins
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1283'>TAJO-1283</a>]
- ORDER BY with the first descending order causes wrong results
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1316'>TAJO-1316</a>]
- NPE occurs when performing window functions after join
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1324'>TAJO-1324</a>]
- Remove warehouse directory rewriting in Unit Test
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1325'>TAJO-1325</a>]
- Invalid history cleaner timeout
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1341'>TAJO-1341</a>]
- The result type of modular operation must be integer.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1356'>TAJO-1356</a>]
- Race conditions in QueryInProgress
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1360'>TAJO-1360</a>]
- VALUES_ field in OPTIONS table of catalog store should be longer.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1365'>TAJO-1365</a>]
- Suppress release audit warnings on Jekins builds
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1368'>TAJO-1368</a>]
- Exceptions during processing nested union queries
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1370'>TAJO-1370</a>]
- TUtils.checkEquals() is not consistent with description in javadoc
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1384'>TAJO-1384</a>]
- Duplicated output file path problem
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1386'>TAJO-1386</a>]
- CURRENT_DATE generates parsing errors sometimes.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1387'>TAJO-1387</a>]
- Correct error message for EXISTS clause
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1396'>TAJO-1396</a>]
- Unexpected IllegalMonitorStateException can be thrown in
QueryInProgress
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1399'>TAJO-1399</a>]
- TajoResourceAllocator might hang on network error
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1405'>TAJO-1405</a>]
- Fix some illegal way of usages on connection pool
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1413'>TAJO-1413</a>]
- tsql should not print a stacktrace message of not critical exceptions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1414'>TAJO-1414</a>]
- Two RemoteException in rpc module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1434'>TAJO-1434</a>]
- Fix supporting version of Hadoop
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1440'>TAJO-1440</a>]
- Some tests fail in parallel test environment in TestKillQuery
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1445'>TAJO-1445</a>]
- Optimizer removes some filter in where clause.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1446'>TAJO-1446</a>]
- Comparison of boolean datum is not valid
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1449'>TAJO-1449</a>]
- TestSelectQuery.testExplainSelect() fails
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1467'>TAJO-1467</a>]
- Parenthesis at the start of SQL query is ignored
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1468'>TAJO-1468</a>]
- Integration test does not terminate occasionally
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1469'>TAJO-1469</a>]
- allocateQueryMaster can leak resources if it times-out (3sec,
hardcoded)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1479'>TAJO-1479</a>]
- NPE during startup CatalogStore
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1481'>TAJO-1481</a>]
- Numeric conversion of Inet4 type should be considered as unsigned
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1485'>TAJO-1485</a>]
- Datum 'Char' returned only 1byte.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1497'>TAJO-1497</a>]
- RPC client does not share a connection
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1510'>TAJO-1510</a>]
- Change a function name from getFileCunks to getFileChunks
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1512'>TAJO-1512</a>]
- Fix various Expr cloning bugs
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1522'>TAJO-1522</a>]
- NPE making stage history before task scheduler is initialized
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1534'>TAJO-1534</a>]
- DelimitedTextFile return null instead of a NullDatum
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1536'>TAJO-1536</a>]
- Fix minor issues in QueryMaster
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1538'>TAJO-1538</a>]
- TajoWorkerResourceManager.allocatedResourceMap is increasing forever
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1540'>TAJO-1540</a>]
- RpcCallback must be able to handle TimeoutException or cancel.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1541'>TAJO-1541</a>]
- Connection timeout in netty client is not working
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1556'>TAJO-1556</a>]
- "insert into select" with reordered column list does not
work.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1558'>TAJO-1558</a>]
- HBASE_LIB/hbase-server-*.jar should be included in the CLASSPATH
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1560'>TAJO-1560</a>]
- HashShuffle report should be ignored when a succeed tasks are not
included
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1564'>TAJO-1564</a>]
- TestFetcher fails occasionally
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1569'>TAJO-1569</a>]
- BlockingRpcClient can make other request fail
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1574'>TAJO-1574</a>]
- Fix NPE on natural join
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1580'>TAJO-1580</a>]
- Error line number is incorrect
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1581'>TAJO-1581</a>]
- Does not update last state of query stage in non-hash shuffle
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1582'>TAJO-1582</a>]
- Occasional resource leak in RawFile during test
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1586'>TAJO-1586</a>]
- TajoMaster HA startup failure on Yarn.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1593'>TAJO-1593</a>]
- Add missing stop condition to Taskrunner
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1596'>TAJO-1596</a>]
- TestPythonFunctions occasionally fails
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1597'>TAJO-1597</a>]
- Problem of ignoring theta join condition
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1598'>TAJO-1598</a>]
- TableMeta should change equals mechanism
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1600'>TAJO-1600</a>]
- Invalid query planning for distinct group-by
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1601'>TAJO-1601</a>]
- '\d information_schema' does not work
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1605'>TAJO-1605</a>]
- Fix master build failure on jdk 1.6
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1606'>TAJO-1606</a>]
- IF NOT EXISTS is not checked for CTAS queries
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1610'>TAJO-1610</a>]
- Cannot find column when the same name is used for table and database
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1620'>TAJO-1620</a>]
- random() in an SQL should generate RANDOM numbers
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1621'>TAJO-1621</a>]
- Compilation error with hadoop 2.7.0
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1622'>TAJO-1622</a>]
- UniformRangePartition occasionally causes IllegalStateException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1630'>TAJO-1630</a>]
- Test failure after TAJO-1130
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1634'>TAJO-1634</a>]
- REST API: fix error when offset is zero
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1642'>TAJO-1642</a>]
- CatalogServer need to check meta table first.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1644'>TAJO-1644</a>]
- When inserting empty data into a partitioned table, existing data
would be removed.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1650'>TAJO-1650</a>]
- TestQueryResource.testGetAllQueries() occasionally fails
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1674'>TAJO-1674</a>]
- Validation of CTAS schema mismatch
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1676'>TAJO-1676</a>]
- Queries on information_schema.partitions table return invalid result
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1679'>TAJO-1679</a>]
- Client APIs should validate identifiers for database object names
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1681'>TAJO-1681</a>]
- Fix TajoDump invalid null check for database name
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1689'>TAJO-1689</a>]
- Metrics file reporter prints histogram metric without group name.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1690'>TAJO-1690</a>]
- Create table using text file fails in HiveCatalogStore.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1697'>TAJO-1697</a>]
- RCFile progress causes NPE occasionally
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1702'>TAJO-1702</a>]
- Fix race condition in finished query cache
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1706'>TAJO-1706</a>]
- querytasks.jsp in Worker causes NPE when a running EB page is open.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1707'>TAJO-1707</a>]
- Rack local count can be more than actual number of tasks.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1712'>TAJO-1712</a>]
- querytasks.jsp throws NPE occasionally when tasks are running.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1716'>TAJO-1716</a>]
- Repartitioner.makeEvenDistributedFetchImpl() does not distribute
fetches evenly
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1725'>TAJO-1725</a>]
- TaskContainer can hang when RuntimeException occurs in TaskImpl.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1726'>TAJO-1726</a>]
- Error in a running TaskAttempt may cause invalid event.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1727'>TAJO-1727</a>]
- Avoid to create external table using TableSpace
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1731'>TAJO-1731</a>]
- With a task failure, query processing is hanged after first retry
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1732'>TAJO-1732</a>]
- During filter push down phase, join conditions are not set properly
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1733'>TAJO-1733</a>]
- Finished query occasionally does not appear in Web-UI
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1741'>TAJO-1741</a>]
- Two tables having same time zone display different timestamps
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1742'>TAJO-1742</a>]
- Remove hadoop dependency in DatumFactory
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1752'>TAJO-1752</a>]
- NameResolver cannot find nested records properly
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1763'>TAJO-1763</a>]
- tpch/*.tbl files cannot be founded in maven modules except for
core-tests.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1776'>TAJO-1776</a>]
- Fix Invalid column type in JDBC
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1777'>TAJO-1777</a>]
- JsonLineDeserializer returns invalid unicode text, if contains
control character
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1779'>TAJO-1779</a>]
- Remove "DFSInputStream has been closed already" messages in
DelimitedLineReader
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1781'>TAJO-1781</a>]
- Join condition is still not found when it exists in OR clause
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1782'>TAJO-1782</a>]
- Check ON_ERROR_STOP flag in TSQL when error is occured
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1783'>TAJO-1783</a>]
- Query result is not returned by invalid output path
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1790'>TAJO-1790</a>]
- TestTajoClientV2::testExecuteQueryAsyncWithListener occasionally is
failed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1796'>TAJO-1796</a>]
- Count all query for Parquet is crashed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1797'>TAJO-1797</a>]
- Workers cannot bind web server address when it starts
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1798'>TAJO-1798</a>]
- Dynamic partitioning occasionally fails.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1799'>TAJO-1799</a>]
- Fix incorrect event handler when kill-query failed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1800'>TAJO-1800</a>]
- WHERE clause is ignored with UNION
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1801'>TAJO-1801</a>]
- Table name is not unique of tableDescMap in QueryMasterTask
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1802'>TAJO-1802</a>]
- PythonScriptEngine copies controller and tajo util whenever it is
initialized
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1808'>TAJO-1808</a>]
- Wrong table type problem in catalog
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1811'>TAJO-1811</a>]
- Catalog server address must be set dynamically during test
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1815'>TAJO-1815</a>]
- Catalog store initialization with PostgreSQL failed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1819'>TAJO-1819</a>]
- Cannot find existing tables when pgsql catalog starts up
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1820'>TAJO-1820</a>]
- Fix wrong case sensitivity rules of non-reserved keywords
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1821'>TAJO-1821</a>]
- Temporary data is not cleared after TestCatalog
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1822'>TAJO-1822</a>]
- Missing return state when CatalogServer.getAllIndexes() is called
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1823'>TAJO-1823</a>]
- Can't start TajoMaster
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1827'>TAJO-1827</a>]
- JSON parsing error at storage-site.json while tajo master starts up
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1829'>TAJO-1829</a>]
- Fix DelimitedTextFileAppender NPE in negative tests
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1830'>TAJO-1830</a>]
- Fix race condition in HdfsServiceTracker
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1835'>TAJO-1835</a>]
- TajoClient::executeQueryAndGetResult should throw
Query(Failed|Killed)Exception
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1838'>TAJO-1838</a>]
- Create external table fails using hbase if tablespaces don't
include the location.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1839'>TAJO-1839</a>]
- IllegalStateException when querying external table using hbase if
storage-site.json doesn't exist on configuration directory.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1846'>TAJO-1846</a>]
- Python temp directory path should be selected differently based on
user platform
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1848'>TAJO-1848</a>]
- ShutdownHook in TajoMaster can throw NPE if serviceInit() is failed.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1851'>TAJO-1851</a>]
- Can not release a different rack task
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1861'>TAJO-1861</a>]
- TSQL should change line after printout error message during
connecting other database
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1863'>TAJO-1863</a>]
- CTAS with union clause does not work properly
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1869'>TAJO-1869</a>]
- Incorrect result when sorting table with small files
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1871'>TAJO-1871</a>]
- '-DskipTests' flag does not work
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1873'>TAJO-1873</a>]
- Fix NPE in QueryExecutorServlet
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1884'>TAJO-1884</a>]
- Add missing jetty-util dependency
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1889'>TAJO-1889</a>]
- UndefinedColumnException when a query with table subquery is executed
on self-describing tables
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1894'>TAJO-1894</a>]
- Filter condition is ignored when a query involves multiple subqueries
and aggregations
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-680'>TAJO-680</a>] -
Improve the IN operator to support sub queries
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-751'>TAJO-751</a>] -
JDBC driver should support cancel() method.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-993'>TAJO-993</a>] -
Cleanup the result data in HDFS after query finished.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1134'>TAJO-1134</a>]
- start-tajo.sh should display WEB UI URL and TajoMaster RPC address
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1160'>TAJO-1160</a>]
- Remove Hadoop dependency from tajo-client module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1269'>TAJO-1269</a>]
- Separate cli from tajo-client
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1311'>TAJO-1311</a>]
- Enable Scattered Hash Shuffle for CTAS statement.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1326'>TAJO-1326</a>]
- Remove legacy memory task histories
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1328'>TAJO-1328</a>]
- Fix deprecated property names in the catalog configuration document
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1335'>TAJO-1335</a>]
- Bump up 0.10.0-SNAPSHOT to 0.11.0-SNAPSHOT in master branch
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1340'>TAJO-1340</a>]
- Change the default output file format.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1343'>TAJO-1343</a>]
- Improve the memory usage of physical executors
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1350'>TAJO-1350</a>]
- Refactor FilterPushDownRule::visitJoin() into well-defined, small
methods
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1352'>TAJO-1352</a>]
- Improve the join order algorithm to consider missed cases of
associative join operators
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1369'>TAJO-1369</a>]
- Some stack trace information is missed in error/fail logging
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1374'>TAJO-1374</a>]
- Support multi-bytes delimiter for CSV file
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1381'>TAJO-1381</a>]
- Support multi-bytes delimiter for Text file
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1383'>TAJO-1383</a>]
- Improve broadcast table cache
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1391'>TAJO-1391</a>]
- RpcConnectionPool should check reference counter of connection before
close
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1394'>TAJO-1394</a>]
- Support reconnect on tsql
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1395'>TAJO-1395</a>]
- Remove deprecated sql files for Oracle and PostgreSQL
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1397'>TAJO-1397</a>]
- Resource allocation should be fine grained.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1400'>TAJO-1400</a>]
- Add TajoStatement::setMaxRows method support
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1403'>TAJO-1403</a>]
- Improve 'Simple Query' with only partition columns and
constant values
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1408'>TAJO-1408</a>]
- Make IntermediateEntryProto more compact
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1409'>TAJO-1409</a>]
- Clients calling remote services returning BoolProto ignores false
values
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1418'>TAJO-1418</a>]
- Comment on TAJO_PULLSERVER_STANDALONE in tajo-env.sh is not consistent
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1422'>TAJO-1422</a>]
- Investigate the case where fragments == null in SeqScanExec
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1436'>TAJO-1436</a>]
- Add Bind method to EvalNode
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1442'>TAJO-1442</a>]
- Improve Hive Compatibility
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1454'>TAJO-1454</a>]
- Comparing two date or two timestamp need not normalizing
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1460'>TAJO-1460</a>]
- Apply TAJO-1407 to ExternalSortExec
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1495'>TAJO-1495</a>]
- Clean up CatalogStore
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1499'>TAJO-1499</a>]
- Check the bind status when EvalNode::eval() is called
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1501'>TAJO-1501</a>]
- Too many log message of HashShuffleAppenderManager.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1507'>TAJO-1507</a>]
- Resource leak when a worker does not response KILLED message
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1508'>TAJO-1508</a>]
- ResourceTracker does not update workers' resource capacities
after the first join
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1509'>TAJO-1509</a>]
- Use dedicated thread to release resource allocated to container
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1523'>TAJO-1523</a>]
- ClassSize should consider compressed oops
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1530'>TAJO-1530</a>]
- Display warn message when the query kill button is clicked in WEB UI.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1542'>TAJO-1542</a>]
- Refactoring of HashJoinExecs
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1548'>TAJO-1548</a>]
- Refactoring condition code for CHAR into CatalogUtil
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1551'>TAJO-1551</a>]
- Reuse allocated resources in next execution block if possible
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1553'>TAJO-1553</a>]
- Improve broadcast join planning
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1563'>TAJO-1563</a>]
- Improve RPC error handling
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1570'>TAJO-1570</a>]
- CatalogUtil newSimpleDataTypeArray should use newSimpleDataType
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1576'>TAJO-1576</a>]
- Sometimes DefaultTajoCliOutputFormatter.parseErrorMessage()
eliminates an important kind of information.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1577'>TAJO-1577</a>]
- Add test cases to verify join plans
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1584'>TAJO-1584</a>]
- Remove QueryMaster client sharing in TajoMaster and TajoWorker
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1591'>TAJO-1591</a>]
- Change StoreType represented as Enum to String type
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1595'>TAJO-1595</a>]
- Pluggable Storage Handler
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1607'>TAJO-1607</a>]
- Tajo Rest Cache-Id should be bigger than zero
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1623'>TAJO-1623</a>]
- INSERT INTO with wrong target columns causes NPE.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1624'>TAJO-1624</a>]
- Add managed table or external description in Table management section
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1625'>TAJO-1625</a>]
- Recap error propagation system
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1626'>TAJO-1626</a>]
- JdbcConnection::setAutoCommit() should not throw an exception.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1633'>TAJO-1633</a>]
- Cleanup TajoMasterClientService
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1636'>TAJO-1636</a>]
- query rest api uri should change from
/databases/{database_name}/queies to /queries
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1638'>TAJO-1638</a>]
- Remove offset parameter from rest api result/{cacheId}
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1645'>TAJO-1645</a>]
- Bump up hbase to 1.1.1
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1646'>TAJO-1646</a>]
- Add extlib directory for third-party libraries
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1649'>TAJO-1649</a>]
- Change Rest API /databases/{database-name}/functions to /functions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1651'>TAJO-1651</a>]
- Too long fetcher default retries
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1659'>TAJO-1659</a>]
- Simplify scan iteration in SeqScan
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1660'>TAJO-1660</a>]
- Update copyright year in NOTICE
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1672'>TAJO-1672</a>]
- Removing rest api to create table POST
/databases/{database-name}/tables interface
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1677'>TAJO-1677</a>]
- Remove unnecessary messages for the Travis CI build
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1695'>TAJO-1695</a>]
- Shuffle fetcher executor should be consider random writing
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1696'>TAJO-1696</a>]
- Resource calculator should consider the requested disk resource at
the first stage
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1699'>TAJO-1699</a>]
- Tajo Java Client version 2
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1700'>TAJO-1700</a>]
- Add better exception handling in TajoMasterClientService
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1701'>TAJO-1701</a>]
- Remove forward or non-forward query concept in TajoClient
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1703'>TAJO-1703</a>]
- Remove hardcoded value in NodeStatusUpdater
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1715'>TAJO-1715</a>]
- Precompute the hash value of various kinds of ids
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1717'>TAJO-1717</a>]
- Parquet Update
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1721'>TAJO-1721</a>]
- Separate routine for CREATE TABLE from DDLExecutor
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1729'>TAJO-1729</a>]
- No handling of default case in DDLExecutor
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1736'>TAJO-1736</a>]
- Remove unnecessary getMountPath()
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1738'>TAJO-1738</a>]
- Improve off-heap RowBlock
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1743'>TAJO-1743</a>]
- Improve calculation of intermediate table statistics
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1745'>TAJO-1745</a>]
- Add positive and negative test methods
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1746'>TAJO-1746</a>]
- Improve resource usage at first request of DefaultTaskScheduler
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1751'>TAJO-1751</a>]
- Reduce the client connection timeout
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1757'>TAJO-1757</a>]
- Add examples for TajoClient v2
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1761'>TAJO-1761</a>]
- Separate an integration unit test kit into an independent module.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1766'>TAJO-1766</a>]
- Improve the performance of cross join
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1775'>TAJO-1775</a>]
- HCatalogStore need to be deprecated
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1780'>TAJO-1780</a>]
- QueryTestCaseBase should be instantized for each test class
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1792'>TAJO-1792</a>]
- tajo-cluster-tests is not available when it is used as an external
maven module.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1810'>TAJO-1810</a>]
- Remove QueryMasterTask cache immediately, if it stored to persistent
storage
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1814'>TAJO-1814</a>]
- Add some positive/negative tests for CREATE TABLE IF NOT EXISTS
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1816'>TAJO-1816</a>]
- Refactor SQL parser tests
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1817'>TAJO-1817</a>]
- Improve SQL parser error message
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1818'>TAJO-1818</a>]
- Separate sql parser into an independent maven module
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1825'>TAJO-1825</a>]
- Remove zero length fragments when file length is zero
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1828'>TAJO-1828</a>]
- tajo-daemon scripts should kill process after process can not stop
gracefully
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1831'>TAJO-1831</a>]
- Add a shutdown hook manager in order to set priorities
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1847'>TAJO-1847</a>]
- Support Socket/Connection Timeout in Rpc
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1860'>TAJO-1860</a>]
- Refactor Rpc clients to take Connection Parameters
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1867'>TAJO-1867</a>]
- TajoMaster should handle the change of ${tajo.root}.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1868'>TAJO-1868</a>]
- Allow TablespaceManager::get to return unregistered tablespace
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1885'>TAJO-1885</a>]
- Simple query with projection should be supported
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1890'>TAJO-1890</a>]
- Clean up debug and test modes and unhandled exceptions
+</li>
+</ul>
+
+<h2> New Feature
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-29'>TAJO-29</a>] -
ORCFile integration
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1135'>TAJO-1135</a>]
- Implement queryable virtual table for cluster information
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1344'>TAJO-1344</a>]
- Python UDF support
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1421'>TAJO-1421</a>]
- Add 'ALTER TABLE SET PROPERTY' statement
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1430'>TAJO-1430</a>]
- Improve SQLAnalyzer by session-based parsing-result caching
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1486'>TAJO-1486</a>]
- Text file should support to skip header rows when creating external
table
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1494'>TAJO-1494</a>]
- Add SeekableScanner support to DelimitedTextFileScanner
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1537'>TAJO-1537</a>]
- Implement a virtual table for sessions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1562'>TAJO-1562</a>]
- Python UDAF support
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1661'>TAJO-1661</a>]
- Implement CORR function
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1730'>TAJO-1730</a>]
- JDBC Tablespace support
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1812'>TAJO-1812</a>]
- Timezone support in JSON file format
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1832'>TAJO-1832</a>]
- Well support for self-describing data formats
+</li>
+</ul>
+
+<h2> Task
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1076'>TAJO-1076</a>]
- Add start second worker documentation
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1273'>TAJO-1273</a>]
- Merge DirectRawFile to master branch
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1300'>TAJO-1300</a>]
- Merge the index branch into the master branch
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1314'>TAJO-1314</a>]
- Documentation for the support of the swift
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1380'>TAJO-1380</a>]
- Update JDBC documentation for new JDBC driver
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1424'>TAJO-1424</a>]
- Investigate the problem of too many "Try to connect"
messeges during Travic CI build
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1439'>TAJO-1439</a>]
- Some method name is written wrongly
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1450'>TAJO-1450</a>]
- Encapsulate Datum in Tuple
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1482'>TAJO-1482</a>]
- Cleanup the legacy cluster mode
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1559'>TAJO-1559</a>]
- Fix data model description (tinyint, smallint)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1567'>TAJO-1567</a>]
- Update old license in some pom.xml files
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1568'>TAJO-1568</a>]
- Apply UnpooledByteBufAllocator when a tajo.test.enabled is set to
enable
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1575'>TAJO-1575</a>]
- HBASE_HOME guidance is duplicated in tajo-env.sh
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1583'>TAJO-1583</a>]
- Remove ServerCallable in RPC client
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1587'>TAJO-1587</a>]
- Upgrade java version to 1.7 for Travis CI
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1590'>TAJO-1590</a>]
- Moving to JDK 7
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1628'>TAJO-1628</a>]
- Add a document for join operation
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1682'>TAJO-1682</a>]
- Write ORC document
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1687'>TAJO-1687</a>]
- sphinx-mavan-plugin version should be 1.0.3
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1713'>TAJO-1713</a>]
- Change the type of edge cache in JoinGraphContext from HashMap to
LRUMap
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1744'>TAJO-1744</a>]
- Porting bash shell scripts to Windows command shell scripts.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1750'>TAJO-1750</a>]
- Upgrade hadoop dependency to 2.7.1
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1755'>TAJO-1755</a>]
- Add documentation for missing built-in functions
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1803'>TAJO-1803</a>]
- Use in-memory derby as the default catalog for unit tests
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1805'>TAJO-1805</a>]
- In the 'Execute Query' page of web UI, default database
should be set as 'default'
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1809'>TAJO-1809</a>]
- Change default value of several configurations
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1813'>TAJO-1813</a>]
- Allow external catalog store for unit testing
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1833'>TAJO-1833</a>]
- Refine LogicalPlanPreprocessor to add new rules easily
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1845'>TAJO-1845</a>]
- Enforcers in the master plan should be printed in a fixed order
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1872'>TAJO-1872</a>]
- Increase the minimum split size and add a classpath to hadoop tools
+</li>
+</ul>
+
+<h2> Test
+</h2>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/TAJO-1870'>TAJO-1870</a>]
- Enable tests of tajo-storage-pgsql module when arch type is 64-bit
+</li>
+</ul>
+
\ No newline at end of file
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