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Warn when MaxDirectMemorySize may be incorrect (Windows/JDK8 only issue) #48365

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merged 9 commits into from
Oct 25, 2019
Merged

Warn when MaxDirectMemorySize may be incorrect (Windows/JDK8 only issue) #48365

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0254f8a
Mute test that fails with Java 8 on Windows
williamrandolph Oct 21, 2019
706ec7e
Simplify to match other muted tests
williamrandolph Oct 21, 2019
4718193
Merge branch '7.x' into fix/7.x/default-max-heap-size-check
williamrandolph Oct 22, 2019
318e6b8
Add broad warning for Windows/JDK8
williamrandolph Oct 22, 2019
982edf3
Merge branch '7.x' into fix/7.x/default-max-heap-size-check
williamrandolph Oct 22, 2019
a804c76
Add context to comments and warnings
williamrandolph Oct 23, 2019
b91f2b7
Reference JDK bug number instead of issue tracker link
williamrandolph Oct 24, 2019
963cc43
Merge branch '7.x' into fix/7.x/default-max-heap-size-check
williamrandolph Oct 24, 2019
aace3c8
Merge branch '7.x' into fix/7.x/default-max-heap-size-check
williamrandolph Oct 25, 2019
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7 changes: 7 additions & 0 deletions ...bution/tools/launchers/src/main/java/org/elasticsearch/tools/launchers/JvmErgonomics.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,8 @@

package org.elasticsearch.tools.launchers;

import org.elasticsearch.tools.java_version_checker.JavaVersion;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
Expand Down Expand Up @@ -58,6 +60,11 @@ static List<String> choose(final List<String> userDefinedJvmOptions) throws Inte
final long heapSize = extractHeapSize(finalJvmOptions);
final long maxDirectMemorySize = extractMaxDirectMemorySize(finalJvmOptions);
if (maxDirectMemorySize == 0) {
if (System.getProperty("os.name").startsWith("Windows") && JavaVersion.majorVersion(JavaVersion.CURRENT) == 8) {
Launchers.errPrintln("Warning: with JDK 8 on Windows, Elasticsearch may miscalculate MaxDirectMemorySize");
Launchers.errPrintln(" due to a JDK issue. See https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8074459");
Launchers.errPrintln(" Please use a newer version of Java or set MaxDirectMemorySize explicitly");
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}
ergonomicChoices.add("-XX:MaxDirectMemorySize=" + heapSize / 2);
}
return ergonomicChoices;
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7 changes: 4 additions & 3 deletions ...n/tools/launchers/src/test/java/org/elasticsearch/tools/launchers/JvmErgonomicsTests.java
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Expand Up @@ -56,8 +56,8 @@ public void testExtractValidHeapSizeUsingMaxHeapSize() throws InterruptedExcepti
}

public void testExtractValidHeapSizeNoOptionPresent() throws InterruptedException, IOException {
// Muting on Windows, awaitsfix: https://github.com/elastic/elasticsearch/issues/47384
assumeFalse(System.getProperty("os.name").startsWith("Windows"));
// Muted for jdk8/Windows, see: https://github.com/elastic/elasticsearch/issues/47384
assumeFalse(System.getProperty("os.name").startsWith("Windows") && JavaVersion.majorVersion(JavaVersion.CURRENT) == 8);
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assertThat(
JvmErgonomics.extractHeapSize(JvmErgonomics.finalJvmOptions(Collections.emptyList())),
greaterThan(0L));
Expand Down Expand Up @@ -123,8 +123,9 @@ public void testExtractNoSystemProperties() {
Map<String, String> parsedSystemProperties = JvmErgonomics.extractSystemProperties(Arrays.asList("-Xms1024M", "-Xmx1024M"));
assertTrue(parsedSystemProperties.isEmpty());
}

public void testMaxDirectMemorySizeChoice() throws InterruptedException, IOException {
// Muted for jdk8/Windows, see: https://github.com/elastic/elasticsearch/issues/47384
assumeFalse(System.getProperty("os.name").startsWith("Windows") && JavaVersion.majorVersion(JavaVersion.CURRENT) == 8);
final Map<String, String> heapMaxDirectMemorySize = new HashMap<>();
heapMaxDirectMemorySize.put("64M", Long.toString((64L << 20) / 2));
Expand Down