La Métamorphose

bin/windows/kafka-server-start.bat

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+@echo off
+rem Licensed to the Apache Software Foundation (ASF) under one or more
+rem contributor license agreements.  See the NOTICE file distributed with
+rem this work for additional information regarding copyright ownership.
+rem The ASF licenses this file to You under the Apache License, Version 2.0
+rem (the "License"); you may not use this file except in compliance with
+rem the License.  You may obtain a copy of the License at
+rem
+rem     http://www.apache.org/licenses/LICENSE-2.0
+rem
+rem Unless required by applicable law or agreed to in writing, software
+rem distributed under the License is distributed on an "AS IS" BASIS,
+rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+rem See the License for the specific language governing permissions and
+rem limitations under the License.
+
+IF [%1] EQU [] (
+	echo USAGE: %0 server.properties
+	EXIT /B 1
+)
+
+SetLocal
+IF ["%KAFKA_LOG4J_OPTS%"] EQU [""] (
+    set KAFKA_LOG4J_OPTS=-Dlog4j.configuration=file:%~dp0../../config/log4j.properties
+)
+IF ["%KAFKA_HEAP_OPTS%"] EQU [""] (
+    rem detect OS architecture
+    wmic os get osarchitecture | find /i "32-bit" >nul 2>&1
+    IF NOT ERRORLEVEL 1 (
+        rem 32-bit OS
+        set KAFKA_HEAP_OPTS=-Xmx512M -Xms512M
+    ) ELSE (
+        rem 64-bit OS
+        set KAFKA_HEAP_OPTS=-Xmx1G -Xms1G
+    )
+)
+"%~dp0kafka-run-class.bat" kafka.Kafka %*
+EndLocal