[fix][jdk17] remove illegal access warning and enable reads optimization on jdk17#14999
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…optimization on jdk17
nicoloboschi
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merlimat
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eolivelli
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| # Allow Netty to use reflection access | ||
| OPTS="$OPTS -Dio.netty.tryReflectionSetAccessible=true" | ||
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| IS_JAVA_8=`java -version 2>&1 |grep version|grep '"1\.8'` |
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What about jdk 11.0.1.8?
Will this check fail?
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In BK we have another way to detect modern jdks with modules
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I understand better now, you added a double quote in the beginning so it should match only "1.8
eolivelli
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…ion on jdk17 (apache#14999) * [fix][bookie] Bookie: remove illegal access warning and enable reads optimization on jdk17
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…ion on jdk17 (apache#14999) * [fix][bookie] Bookie: remove illegal access warning and enable reads optimization on jdk17 (cherry picked from commit 94cc46a)
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Motivation
In BookKeeper there's an optimization in order to improve file reads on Linux using
posix_fadvisenative instructions.In order to do that it needs to access
java.io.FileDescriptorusing the reflection.For Netty there is the
java.nio.DirectBufferusage with it's currently used in Pulsar and it should improve the direct memory footprint.At the moment:
Illegal reflective access by io.netty.util.internal.ReflectionUtil (file:/Users/nicolo.boschi/.m2/repository/io/netty/netty-common/4.1.74.Final/netty-common-4.1.74.Final.jar) to constructor java.nio.DirectByteBuffer(long,int)This pull is also intended to keep the same behavior across JDK11 and JDK17.
Modifications
--add-opens java.base/java.io=ALL-UNNAMED --add-opens java.base/sun.nio=ALL-UNNAMEDto the command line inside ´bin´ directory and allow reflections on java.io package. This option is available only starting from Java 9.note: this is not documented on BookKeeper project, I will follow-up there.
no-need-doc