ARROW-4118: [Python] Fix benchmark setup for "asv run"

"conda activate" unfortunately isn't available from a non-interactive shell,
and running bash as interactive doesn't look like a workable solution.

Also fix a setup slowness issue in the Parquet benchmarks, and fix a C++ ABI
issue by downloading packages from Anaconda rather than conda-forge.

docs/source/python/benchmarks.rst

@@ -19,35 +19,37 @@ Benchmarks
 ==========
 
 The ``pyarrow`` package comes with a suite of benchmarks meant to
-run with `asv`_.  You'll need to install the ``asv`` package first
+run with `ASV`_.  You'll need to install the ``asv`` package first
 (``pip install asv`` or ``conda install -c conda-forge asv``).
 
-The benchmarks are run using `asv`_ which is also their only requirement.
-
 Running the benchmarks
 ----------------------
 
-To run the benchmarks, call ``asv run --python=same``. You cannot use the
-plain ``asv run`` command at the moment as asv cannot handle python packages
-in subdirectories of a repository.
+To run the benchmarks for a locally-built Arrow, run ``asv dev`` or
+``asv run --python=same``.
 
-Running with arbitrary revisions
---------------------------------
+Running for arbitrary Git revisions
+-----------------------------------
 
 ASV allows to store results and generate graphs of the benchmarks over
-the project's evolution.  For this you have the latest development version of ASV:
+the project's evolution.  You need to have the latest development version of ASV:
 
 .. code::
 
     pip install git+https://github.com/airspeed-velocity/asv
 
+The build scripts assume that Conda's ``activate`` script is on the PATH
+(the ``conda activate`` command unfortunately isn't available from
+non-interactive scripts).
+
 Now you should be ready to run ``asv run`` or whatever other command
-suits your needs.
+suits your needs.  Note that this can be quite long, as each Arrow needs
+to be rebuilt for each Git revision you're running the benchmarks for.
 
 Compatibility
 -------------
 
 We only expect the benchmarking setup to work with Python 3.6 or later,
-on a Unix-like system.
+on a Unix-like system with bash.
 
 .. _asv: https://asv.readthedocs.org/

python/asv-build.sh

@@ -21,7 +21,9 @@ set -e
 
 # ASV doesn't activate its conda environment for us
 if [ -z "$ASV_ENV_DIR" ]; then exit 1; fi
-conda activate $ASV_ENV_DIR
+# Avoid "conda activate" because it's only set up in interactive shells
+# (https://github.com/conda/conda/issues/8072)
+source activate $ASV_ENV_DIR
 echo "== Conda Prefix for benchmarks: " $CONDA_PREFIX " =="
 
 # Build Arrow C++ libraries
@@ -32,6 +34,8 @@ export ORC_HOME=$CONDA_PREFIX
 export PROTOBUF_HOME=$CONDA_PREFIX
 export BOOST_ROOT=$CONDA_PREFIX
 
+export CXXFLAGS="-D_GLIBCXX_USE_CXX11_ABI=1"
+
 pushd ../cpp
 mkdir -p build
 pushd build
@@ -40,9 +44,11 @@ cmake -GNinja \
       -DCMAKE_BUILD_TYPE=release \
       -DCMAKE_INSTALL_PREFIX=$ARROW_HOME \
       -DARROW_CXXFLAGS=$CXXFLAGS \
-      -DARROW_PYTHON=ON \
-      -DARROW_PLASMA=ON \
-      -DARROW_BUILD_TESTS=OFF \
+      -DARROW_USE_GLOG=off \
+      -DARROW_PARQUET=on \
+      -DARROW_PYTHON=on \
+      -DARROW_PLASMA=on \
+      -DARROW_BUILD_TESTS=off \
       ..
 cmake --build . --target install
 
@@ -52,7 +58,8 @@ popd
 # Build pyarrow wrappers
 export SETUPTOOLS_SCM_PRETEND_VERSION=0.0.1
 export PYARROW_BUILD_TYPE=release
-export PYARROW_PARALLEL=4
+export PYARROW_PARALLEL=8
+export PYARROW_WITH_PARQUET=1
 export PYARROW_WITH_PLASMA=1
 
 python setup.py clean

python/asv.conf.json

@@ -35,6 +35,7 @@
     // of the repository.
     "repo_subdir": "python",
 
+    // Custom build commands for Arrow.
     "build_command": ["/bin/bash {build_dir}/asv-build.sh"],
     "install_command": ["/bin/bash {build_dir}/asv-install.sh"],
     "uninstall_command": ["/bin/bash {build_dir}/asv-uninstall.sh"],
@@ -56,7 +57,8 @@
     // determined by looking for tools on the PATH environment
     // variable.
     "environment_type": "conda",
-    "conda_channels": ["conda-forge", "defaults"],
+    // Avoid conda-forge to avoid C++ ABI issues
+    "conda_channels": ["defaults"],
 
     // the base URL to show a commit for the project.
     "show_commit_url": "https://github.com/apache/arrow/commit/",

python/benchmarks/parquet.py

@@ -15,11 +15,12 @@
 # specific language governing permissions and limitations
 # under the License.
 
-import pandas as pd
-import random
 import shutil
 import tempfile
 
+import numpy as np
+import pandas as pd
+
 import pyarrow as pa
 try:
     import pyarrow.parquet as pq
@@ -38,18 +39,19 @@ class ParquetManifestCreation(object):
 
     def setup(self, num_partitions, num_threads):
         if pq is None:
-            raise NotImplementedError
+            raise NotImplementedError("Parquet support not enabled")
 
         self.tmpdir = tempfile.mkdtemp('benchmark_parquet')
-        num1 = [random.choice(range(0, num_partitions))
-                for _ in range(self.size)]
-        num2 = [random.choice(range(0, 1000)) for _ in range(self.size)]
+        rnd = np.random.RandomState(42)
+        num1 = rnd.randint(0, num_partitions, size=self.size)
+        num2 = rnd.randint(0, 1000, size=self.size)
         output_df = pd.DataFrame({'num1': num1, 'num2': num2})
         output_table = pa.Table.from_pandas(output_df)
         pq.write_to_dataset(output_table, self.tmpdir, ['num1'])
 
     def teardown(self, num_partitions, num_threads):
-        shutil.rmtree(self.tmpdir)
+        if self.tmpdir is not None:
+            shutil.rmtree(self.tmpdir)
 
     def time_manifest_creation(self, num_partitions, num_threads):
         pq.ParquetManifest(self.tmpdir, metadata_nthreads=num_threads)