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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/20 16:05:11 UTC

[GitHub] [arrow] domoritz commented on a change in pull request #10362: ARROW-12833: [JS] Construct perf data in JS

domoritz commented on a change in pull request #10362:
URL: https://github.com/apache/arrow/pull/10362#discussion_r636244842



##########
File path: js/perf/config.ts
##########
@@ -0,0 +1,67 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import * as Arrow from '../src/Arrow.dom';
+
+console.time('Prepare Data');
+
+const LENGTH = 100000;
+const NUM_BATCHES = 10;
+
+const values = Arrow.Utf8Vector.from(['Charlottesville', 'New York', 'San Francisco', 'Seattle', 'Terre Haute', 'Washington, DC']);
+
+const batches = Array.from({length: NUM_BATCHES}).map(() => {
+    const lat = Float32Array.from(
+        { length: LENGTH },
+        () => ((Math.random() - 0.5) * 2 * 90));
+    const lng = Float32Array.from(
+        { length: LENGTH },
+        () => ((Math.random() - 0.5) * 2 * 90));
+
+    const origin = Uint8Array.from(
+        { length: LENGTH },
+        () => (Math.random() * 6));
+    const destination = Uint8Array.from(
+        { length: LENGTH },
+        () => (Math.random() * 6));
+
+    return Arrow.RecordBatch.new({
+        'lat': Arrow.Float32Vector.from(lat),
+        'lng': Arrow.Float32Vector.from(lng),
+        'origin': Arrow.DictionaryVector.from(values, new Arrow.Int8(), origin),
+        'destination': Arrow.DictionaryVector.from(values, new Arrow.Int8(), destination),

Review comment:
       That works. Thanks!




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