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John Sherman a29d06db53 IMPALA-9218: Add support for locally compiled Hive

- Add HIVE_VERSION_OVERRIDE, HIVE_STORAGE_API_VERSION_OVERRIDE,
  HIVE_METASTORE_THRIFT_DIR_OVERRIDE, HIVE_HOME_OVERRIDE environment
  variable support to impala-config.sh
- When used together with HIVE_SRC_DIR_OVERRIDE allows a user to
  specify a locally compiled version of Hive for development and the
  minicluster
- Hive jars are expected to have been installed into the local maven
  repository
- Currently only version 3 of Hive is supported due to the absence of
  API shims for Hive 4.0
Example:
  ~/hive $ mvn package install -Pdist -DskipTests

Example configuration:
export HIVE_VERSION_OVERRIDE=3.1.0-SNAPSHOT
export HIVE_STORAGE_API_VERSION_OVERRIDE=2.6.0
export HIVE_HOME_OVERRIDE=\
~/hive/packaging/target/apache-hive-3.1.0-SNAPSHOT-bin/apache-hive-3.1.0-SNAPSHOT-bin
export HIVE_SRC_DIR_OVERRIDE=~/hive
export HIVE_METASTORE_THRIFT_DIR_OVERRIDE=~/hive/standalone-metastore/src/main/thrift/

Change-Id: I21892c153c445e3a5d93f2bc8f5e0b799929dd34
Reviewed-on: http://gerrit.cloudera.org:8080/17094
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2021-03-12 03:15:44 +00:00

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This document introduces the Impala project layout and some key configuration variables. Beware that it may become stale over time as the project evolves.

Detailed Build Notes

Impala can be built with pre-built components or components downloaded from S3. The components needed to build Impala are Apache Hadoop, Hive, and HBase. If you need to manually override the locations or versions of these components, you can do so through the environment variables and scripts listed below.

Scripts and directories

Location	Purpose
bin/impala-config.sh	This script must be sourced to setup all environment variables properly to allow other scripts to work
bin/impala-config-local.sh	A script can be created in this location to set local overrides for any environment variables
bin/impala-config-branch.sh	A version of the above that can be checked into a branch for convenience.
bin/bootstrap_build.sh	A helper script to bootstrap some of the build requirements.
bin/bootstrap_development.sh	A helper script to bootstrap a developer environment. Please read it before using.
be/build/	Impala build output goes here.
be/generated-sources/	Thrift and other generated source will be found here.

Environment variable	Default value	Description
IMPALA_HOME		Top level Impala directory
IMPALA_TOOLCHAIN	"${IMPALA_HOME}/toolchain"	Native toolchain directory (for compilers, libraries, etc.)
SKIP_TOOLCHAIN_BOOTSTRAP	"false"	Skips downloading the toolchain any python dependencies if "true"
CDP_BUILD_NUMBER		Identifier to indicate the CDP build number
CDP_COMPONENTS_HOME	"${IMPALA_HOME}/toolchain/cdp_components-${CDP_BUILD_NUMBER}"	Location of the CDP components within the toolchain.
CDH_MAJOR_VERSION	"7"	Identifier used to uniqueify paths for potentially incompatible component builds.
IMPALA_CONFIG_SOURCED	"1"	Set by ${IMPALA_HOME}/bin/impala-config.sh (internal use)
JAVA_HOME	"/usr/lib/jvm/${JAVA_VERSION}"	Used to locate Java
JAVA_VERSION	"java-7-oracle-amd64"	Can override to set a local Java version.
JAVA	"${JAVA_HOME}/bin/java"	Java binary location.
CLASSPATH		See bin/set-classpath.sh for details.
PYTHONPATH	Will be changed to include: "${IMPALA_HOME}/shell/gen-py" "${IMPALA_HOME}/testdata" "${THRIFT_HOME}/python/lib/python2.7/site-packages" "${HIVE_HOME}/lib/py"

Source Directories for Impala

Environment variable	Default value	Description
IMPALA_BE_DIR	"${IMPALA_HOME}/be"	Backend directory. Build output is also stored here.
IMPALA_FE_DIR	"${IMPALA_HOME}/fe"	Frontend directory
IMPALA_COMMON_DIR	"${IMPALA_HOME}/common"	Common code (thrift, function registry)

Various Compilation Settings

Environment variable	Default value	Description
IMPALA_BUILD_THREADS	"8" or set to number of processors by default.	Used for make -j and distcc -j settings.
IMPALA_MAKE_FLAGS	""	Any extra settings to pass to make. Also used when copying udfs / udas into HDFS.
USE_SYSTEM_GCC	"0"	If set to any other value, directs cmake to not set GCC_ROOT, CMAKE_C_COMPILER, CMAKE_CXX_COMPILER, as well as setting TOOLCHAIN_LINK_FLAGS
IMPALA_CXX_COMPILER	"default"	Used by cmake (cmake_modules/toolchain and clang_toolchain.cmake) to select gcc / clang
USE_GOLD_LINKER	"true"	Directs backend cmake to use gold.
IS_OSX	"false"	(Experimental) currently only used to disable Kudu.

Dependencies

Environment variable	Default value	Description
HADOOP_HOME	"${CDP_COMPONENTS_HOME}/hadoop-${IMPALA_HADOOP_VERSION}/"	Used to locate Hadoop
HADOOP_INCLUDE_DIR	"${HADOOP_HOME}/include"	For 'hdfs.h'
HADOOP_LIB_DIR	"${HADOOP_HOME}/lib"	For 'libhdfs.a' or 'libhdfs.so'
HIVE_HOME	"${CDP_COMPONENTS_HOME}/{hive-${IMPALA_HIVE_VERSION}/"
HBASE_HOME	"${CDP_COMPONENTS_HOME}/hbase-${IMPALA_HBASE_VERSION}/"
THRIFT_HOME	"${IMPALA_TOOLCHAIN}/thrift-${IMPALA_THRIFT_VERSION}"

Hive Dependency Overrides

Typically used together to specify a local build of Apache Hive. Care should be taken while using these variables since they take precedence over the defaults in impala-config.sh, they may cause confusion when switching between branches or versions of Apache Impala.

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