common

closes #1446

1. StoragePluginsRegistryImpl was updated:

a. for backward compatibility at init to convert all existing storage plugins names to lower case, in case of duplicates, to log warning and skip the duplicate.

b. to wrap persistent plugins registry into case insensitive store wrapper (CaseInsensitivePersistentStore) to ensure all given keys are converted into lower case when performing insert, update, delete, search operations.

c. to load system storage plugins dynamically by @SystemStorage annotation.

2. StoragePlugins class was updated to stored storage plugins configs by name in case insensitive map.

3. SchemaUtilities.searchSchemaTree method was updated to convert all schema names into lower case to ensure that are they are matched case insensitively (all schemas are stored in Drill in lower case).

4. FileSystemConfig was updated to store workspaces by name in case insensitive hash map.

5. All plugins schema factories are now extend AbstractSchemaFactory to ensure that given schema name is converted to lower case.

6. New method areTableNamesAreCaseInsensitive was added to AbstractSchema to indicate if schema tables names are case insensitive. By default, false. Schema implementation is responsible for table names case insensitive search in case it supports one. Currently, information_schema, sys and hive do so.

7. System storage plugins (information_schema, sys) were refactored to ensure their schema, table names are case insensitive, also the annotation @SystemPlugin and additional constructor were added to allow dynamically load system plugins at storage plugin registry during init phase.

8. MetadataProvider was updated to concert all schema filter conditions into lower case to ensure schema would be matched case insensitively.

9. ShowSchemasHandler, ShowTablesHandler, DescribeTableHandler were updated to ensure schema / tables names (this depends if schema supports case insensitive table names) would be found case insensitively.

git closes #1439

closes #1415

- Storage Plugins Handler service is used op the Drill start-up stage and it updates storage plugins configs from

storage-plugins-override.conf file. If plugins configs are present in the persistence store - they are updated,

otherwise bootstrap plugins are updated and the result configs are loaded to persistence store. If the enabled

status is absent in the storage-plugins-override.conf file, the last plugin config enabled status persists.

- 'drill.exec.storage.action_on_plugins_override_file' Boot option is added. This is the action, which should be

performed on the storage-plugins-override.conf file after successful updating storage plugins configs.

Possible values are: "none" (default), "rename" and "remove".

- The "NULL" issue with updating Hive plugin config by REST is solved. But clients are still being instantiated for disabled

plugins - DRILL-6412.

- "org.honton.chas.hocon:jackson-dataformat-hocon" library is added for the proper deserializing HOCON conf file

- additional refactoring: "com.typesafe:config" and "org.apache.commons:commons-lang3" are placed into DependencyManagement

block with proper versions; correct properties for metrics in "drill-override-example.conf" are specified

closes #1345

closes #1360

closes #1306

closes #1284

closes #1267

closes #1276

closes #1238

Added more unit tests.

Updated to handle VARDECIMAL

The VARDECIMAL type was recently added to Drill. Added support for this type. The sqlTypeOf() function now returns DECIMAL(p, s) for precision p, scale s.

closes #1242

- Fix compilation errors for new version of Guava.

- Remove usage of deprecated API

- Shade guava and add dependencies to the shaded version

- Ban unshaded package

- Introduce drill-shaded module and move guava-shaded under it

- Add methods to convert shaded guava lists to the unshaded ones

- Add instruction for publishing artifacts to the Apache repository

closes #1207

Add ExprVisitors for VARDECIMAL

Modify writers/readers to support VARDECIMAL

- Added usage of VarDecimal for parquet, hive, maprdb, jdbc;

- Added options to store decimals as int32 and int64 or fixed_len_byte_array or binary;

Add UDFs for VARDECIMAL data type

- modify type inference rules

- remove UDFs for obsolete DECIMAL types

Enable DECIMAL data type by default

Add unit tests for DECIMAL data type

Fix mapping for NLJ when literal with non-primitive type is used in join conditions

Refresh protobuf C++ source files

Changes in C++ files

Add support for decimal logical type in Avro.

Add support for date, time and timestamp logical types.

Update Avro version to 1.8.2.

Protobuf change to carry HTTP port info

Allow CORS for access to remote Drillbit metrics

Cross-origin resource sharing (CORS) is required to ensure that the WebServer is able serve REST calls for status pages.

Materialize relevant metrics

1. Heap memory (incl usage)

2. Heap memory (incl usage)

3. Average System Load (last 1 min)

4. Option to view from other nodes (pop out)

5. Added Glyphicons

Update System Table and related tests

1. Updated System Table to show HTTP port

2. Updated unit tests

Skip updating remote bit info when HTTPS (SSL) or Authentication is enabled.

Default CpuGaugeSet is public; Added Gauges

* CPU Utiization by Drill

* Uptime

Show ALL Buttons, but do HTTPS Check

Reduce power button to icon

Allowing CORS for /status/metrics only

Accounting for situations when JVM does not report Process CPU Load

i.e. returned value is negative.

See https://docs.oracle.com/javase/7/docs/jre/api/management/extension/com/sun/management/OperatingSystemMXBean.html#getProcessCpuLoad()

Addressed shutdown security conditions

Added C++ Client Protobuf

Added steps for Protobuf generation to protocol/readme.txt

This closes #1203

Changes required to implement Output Batch Sizing in Project using the RecordBatchSizer.

closes #1302

- Replacing com.codahale.metrics with last io.dropwizard.metrics Metrics for Drill

- com.yammer.metrics is removed, since isn't used directly by Drill

closes #1189

closes #1177

closes #1174

close apache/drill#1251

closes #1163

closes #1045

close apache/drill#1085