commit | d06943c27563cf69ce3a5f739b5f71aba0989ddc | [log] [tgz] |
---|---|---|
author | Tim Armstrong <tarmstrong@cloudera.com> | Thu Nov 07 13:06:59 2019 -0800 |
committer | Impala Public Jenkins <impala-public-jenkins@cloudera.com> | Tue Nov 12 23:36:32 2019 +0000 |
tree | 531d4563a9ec311a1e60af91d8759fb4fdcf2d5a | |
parent | a4743fd9bb9158ac5c4de55f77276f39b4570346 [diff] |
IMPALA-9128: part 1: log on slow data stream RPCs Allows modifying the threshold for KRPC's server-side slow RPC logging (which is enabled for all KRPCs). Added additional logging for data stream RPCs TransmitData and EndDataStream, and for slow waits that delay the query. Adds statistics for RPC time to provide some clues if there are slow data stream RPCs. I tested this with a low threshold and delays added: start-impala-cluster.py \ --impalad_args=--impala_slow_rpc_threshold_ms=1 \ --impalad_args=--debug_actions=END_DATA_STREAM_DELAY:JITTER@3000@1.0 Example Profile output: - NetworkThroughput: (Avg: 102.98 MB/sec ; Min: 5.58 MB/sec ; Max: 171.79 MB/sec ; Number of samples: 296) - RpcNetworkTime: (Avg: 13.468ms ; Min: 91.309us ; Max: 2s395ms ; Number of samples: 299) - RpcRecvrTime: (Avg: 13.406ms ; Min: 83.160us ; Max: 2s395ms ; Number of samples: 299) Example log output (with log threshold of 1ms): I1107 14:33:50.487251 24933 krpc-data-stream-sender.cc:363] ad4fa70619170ace:b58b2eba00000006] Long delay waiting for RPC to 127.0.1.1:27000 (fragment_instance_id=ad4fa70619170ace:b58b2eba00000000): took 451.036ms I1107 14:33:51.295518 21361 rpcz_store.cc:265] Call impala.DataStreamService.EndDataStream from 127.0.0.1:43952 (request call id 82) took 1259ms. Request Metrics: {} I1107 14:33:44.843204 21332 krpc-data-stream-sender.cc:342] Slow TransmitData RPC to 127.0.1.1:27000 (fragment_instance_id=ad4fa70619170ace:b58b2eba00000006): took 2.194ms. Receiver time: 457.902us Network time: 1.736ms I1107 14:33:45.139068 21333 krpc-data-stream-sender.cc:342] Slow EndDataStream RPC to 127.0.1.1:27001 (fragment_instance_id=ad4fa70619170ace:b58b2eba00000004): took 61.340ms. Receiver time: 81.908us Network time: 61.259ms Change-Id: I258ac91b9fbbdbc86d0e8091c34f511f8957c4cd Reviewed-on: http://gerrit.cloudera.org:8080/14662 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Lightning-fast, distributed SQL queries for petabytes of data stored in Apache Hadoop clusters.
Impala is a modern, massively-distributed, massively-parallel, C++ query engine that lets you analyze, transform and combine data from a variety of data sources:
To learn more about Impala as a business user, or to try Impala live or in a VM, please visit the Impala homepage.
If you are interested in contributing to Impala as a developer, or learning more about Impala's internals and architecture, visit the Impala wiki.
Impala only supports Linux at the moment.
This distribution uses cryptographic software and may be subject to export controls. Please refer to EXPORT_CONTROL.md for more information.
See bin/bootstrap_build.sh.
Impala can be built with pre-built components or components downloaded from S3. The components needed to build Impala are Apache Hadoop, Hive, HBase, and Sentry. 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.
Location | Purpose |
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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 |
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IMPALA_HOME | Top level Impala directory | |
IMPALA_TOOLCHAIN | “${IMPALA_HOME}/toolchain” | Native toolchain directory (for compilers, libraries, etc.) |
SKIP_TOOLCHAIN_BOOTSTRAP | “false” | Skips downloading the toolchain any python dependencies if “true” |
CDH_BUILD_NUMBER | Identifier to indicate the CDH build number | |
CDH_COMPONENTS_HOME | “${IMPALA_HOME}/toolchain/cdh_components-${CDH_BUILD_NUMBER}” | Location of the CDH components within the toolchain. |
CDH_MAJOR_VERSION | “5” | 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” “${HIVE_HOME}/lib/py” “${IMPALA_HOME}/shell/ext-py/prettytable-0.7.1/dist/prettytable-0.7.1” "${IMPALA_HOME}/shell/ext-py/sasl-0.1.1/dist/sasl-0.1.1-py2.7-linux-x "${IMPALA_HOME}/shell/ext-py/sqlparse-0.1.19/dist/sqlparse-0.1.19-py2 |
Environment variable | Default value | Description |
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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 | “${IMPALA_HOME}/common” | Common code (thrift, function registry) |
Environment variable | Default value | Description |
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IMPALA_BUILD_THREADS | “8” or set to number of processors by default. | Used for make -j and distcc -j settings. |
IMPALA_MAKE_FLAGS | "" | Any extra settings to pass to make. Also used when copying udfs / udas into HDFS. |
USE_SYSTEM_GCC | “0” | If set to any other value, directs cmake to not set GCC_ROOT, CMAKE_C_COMPILER, CMAKE_CXX_COMPILER, as well as setting TOOLCHAIN_LINK_FLAGS |
IMPALA_CXX_COMPILER | “default” | Used by cmake (cmake_modules/toolchain and clang_toolchain.cmake) to select gcc / clang |
USE_GOLD_LINKER | “true” | Directs backend cmake to use gold. |
IS_OSX | “false” | (Experimental) currently only used to disable Kudu. |
Environment variable | Default value | Description |
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HADOOP_HOME | “${CDH_COMPONENTS_HOME}/hadoop-${IMPALA_HADOOP_VERSION}/” | Used to locate Hadoop |
HADOOP_INCLUDE_DIR | “${HADOOP_HOME}/include” | For ‘hdfs.h’ |
HADOOP_LIB_DIR | “${HADOOP_HOME}/lib” | For ‘libhdfs.a’ or ‘libhdfs.so’ |
HIVE_HOME | “${CDH_COMPONENTS_HOME}/{hive-${IMPALA_HIVE_VERSION}/” | |
HBASE_HOME | “${CDH_COMPONENTS_HOME}/hbase-${IMPALA_HBASE_VERSION}/” | |
SENTRY_HOME | “${CDH_COMPONENTS_HOME}/sentry-${IMPALA_SENTRY_VERSION}/” | Used to setup test data |
THRIFT_HOME | “${IMPALA_TOOLCHAIN}/thrift-${IMPALA_THRIFT_VERSION}” |