The following two tests failed in the JDK20 CI:

runtime/cds/appcds/WrongClasspath.java
runtime/cds/appcds/dynamicArchive/WrongTopClasspath.java

Here's a log file snippet from the WrongClasspath.java test:

----------System.err:(33/3347)----------
 stdout: [[0.026s][info][cds] trying to map /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/3/appcds-22h57m52s186.jsa
[0.026s][info][cds] Opened archive /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/3/appcds-22h57m52s186.jsa.
[0.026s][info][cds] Archive was created with UseCompressedOops = 1, UseCompressedClassPointers = 1
[0.026s][info][cds] Core region alignment: 65536
[0.026s][info][cds] Reserved archive_space_rs [0x0000000800000000 - 0x0000000801000000] (16777216) bytes
[0.026s][info][cds] Reserved class_space_rs [0x0000000801000000 - 0x0000000841000000] (1073741824) bytes
[0.026s][info][cds] Mapped static region #0 at base 0x0000000800000000 top 0x0000000800500000 (ReadWrite)
[0.026s][info][cds] Mapped static region #1 at base 0x0000000800500000 top 0x0000000800cf0000 (ReadOnly)
[0.026s][info][cds] UseSharedSpaces: A jar file is not the one used while building the shared archive file: /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/3/jar2.jar
[0.026s][warning][cds] /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/3/jar2.jar timestamp has changed.
[0.026s][info ][cds] Unmapping region #0 at base 0x0000000800000000 (ReadWrite)
[0.026s][info ][cds] Unmapping region #1 at base 0x0000000800500000 (ReadOnly)
[0.026s][info ][cds] ArchiveRelocationMode == 1: always map archive(s) at an alternative address
[0.026s][info ][cds] UseSharedSpaces: Unable to map shared spaces
Hello World
];
 stderr: [java version "20-ea" 2023-03-21
Java(TM) SE Runtime Environment (fastdebug build 20-ea+11-617)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 20-ea+11-617, mixed mode)
]
 exitValue = 0

java.lang.RuntimeException: '.warning..cds. A jar file is not the one used while building the shared archive file:.*jar2.jar' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:340)
at WrongClasspath.main(WrongClasspath.java:78)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:1589)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: '.warning..cds. A jar file is not the one used while building the shared archive file:.*jar2.jar' missing from stdout/stderr


Here's a log file snippet from the WrongTopClasspath.java test:

----------System.err:(74/7736)----------
 stdout: [[0.000s][info][cds] optimized module handling: disabled because bootclasspath was appended
[0.026s][info][cds] trying to map /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/0/base-22h52m27s348.jsa
[0.026s][info][cds] Opened archive /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/0/base-22h52m27s348.jsa.
[0.026s][info][cds] Archive was created with UseCompressedOops = 1, UseCompressedClassPointers = 1
[0.026s][info][cds] Core region alignment: 65536
[0.026s][info][cds] trying to map /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/0/top-22h52m27s324.jsa
[0.026s][info][cds] Opened archive /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/0/top-22h52m27s324.jsa.
[0.026s][info][cds] Archive was created with UseCompressedOops = 1, UseCompressedClassPointers = 1
[0.026s][info][cds] optimized module handling: disabled because archive was created without optimized module handling
[0.026s][info][cds] full module graph: disabled because archive was created without full module graph
[0.027s][info][cds] Reserved archive_space_rs [0x0000000800000000 - 0x0000000801000000] (16777216) bytes
[0.027s][info][cds] Reserved class_space_rs [0x0000000801000000 - 0x0000000841000000] (1073741824) bytes
[0.027s][info][cds] Mapped static region #0 at base 0x0000000800000000 top 0x0000000800500000 (ReadWrite)
[0.027s][info][cds] Mapped static region #1 at base 0x0000000800500000 top 0x0000000800cf0000 (ReadOnly)
[0.027s][info][cds] Mapped dynamic region #0 at base 0x0000000800cf0000 top 0x0000000800d10000 (ReadWrite)
[0.027s][info][cds] Mapped dynamic region #1 at base 0x0000000800d10000 top 0x0000000800d30000 (ReadOnly)
[0.027s][info][cds] UseSharedSpaces: shared class paths mismatch (hint: enable -Xlog:class+path=info to diagnose the failure)
[0.027s][info][cds] Unmapping region #0 at base 0x0000000800cf0000 (ReadWrite)
[0.027s][info][cds] Unmapping region #1 at base 0x0000000800d10000 (ReadOnly)
[0.027s][info][cds] ArchiveRelocationMode == 1: always map archive(s) at an alternative address
[0.027s][info][cds] Unmapping region #0 at base 0x0000000800000000 (ReadWrite)
[0.027s][info][cds] Unmapping region #1 at base 0x0000000800500000 (ReadOnly)
[0.027s][info][cds] Try to map archive(s) at an alternative address
[0.027s][info][cds] Reserved archive_space_rs [0x0000000100000000 - 0x0000000101000000] (16777216) bytes
[0.027s][info][cds] Reserved class_space_rs [0x0000000101000000 - 0x0000000141000000] (1073741824) bytes
[0.027s][info][cds] Mapped static region #0 at base 0x0000000100000000 top 0x0000000100500000 (ReadWrite)
[0.027s][info][cds] Mapped static region #1 at base 0x0000000100500000 top 0x0000000100cf0000 (ReadOnly)
[0.027s][info][cds] Mapped static region #2 at base 0x0000fffce8020000 top 0x0000fffce8060000 (Bitmap)
[0.032s][info][cds] Mapped dynamic region #0 at base 0x0000000100cf0000 top 0x0000000100d10000 (ReadWrite)
[0.032s][info][cds] Mapped dynamic region #1 at base 0x0000000100d10000 top 0x0000000100d30000 (ReadOnly)
[0.032s][info][cds] Mapped dynamic region #2 at base 0x0000fffce8010000 top 0x0000fffce8020000 (Bitmap)
[0.032s][info][cds] UseSharedSpaces: shared class paths mismatch (hint: enable -Xlog:class+path=info to diagnose the failure)
[0.032s][info][cds] Unmapping region #0 at base 0x0000000100cf0000 (ReadWrite)
[0.032s][info][cds] Unmapping region #1 at base 0x0000000100d10000 (ReadOnly)
[0.032s][info][cds] Unmapping region #2 at base 0x0000fffce8010000 (Bitmap)
[0.032s][warning][cds,dynamic] Unable to use shared archive. The top archive failed to load: /opt/mach5/mesos/work_dir/slaves/0c72054a-24ab-4dbb-944f-97f9341a1b96-S48914/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8fb45215-e524-463d-a4ae-7544184428ed/runs/0b0fc7f4-3df2-46dc-a866-e3ba115b8612/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_cds_relocation/scratch/0/top-22h52m27s324.jsa
[0.032s][info ][cds ] CDS archive was created with max heap size = 1984M, and the following configuration:
[0.032s][info ][cds ] narrow_klass_base = 0x0000000100000000, narrow_klass_shift = 0
[0.032s][info ][cds ] narrow_oop_mode = 0, narrow_oop_base = 0x0000000000000000, narrow_oop_shift = 0
[0.032s][info ][cds ] heap range = [0x0000000084000000 - 0x0000000100000000]
[0.032s][info ][cds ] The current max heap size = 1984M, HeapRegion::GrainBytes = 1048576
[0.032s][info ][cds ] narrow_klass_base = 0x0000000100000000, narrow_klass_shift = 0
[0.032s][info ][cds ] narrow_oop_mode = 0, narrow_oop_base = 0x0000000000000000, narrow_oop_shift = 0
[0.033s][info ][cds ] heap range = [0x0000000084000000 - 0x0000000100000000]
[0.033s][info ][cds ] CDS heap data relocation delta = 0 bytes
[0.033s][info ][cds ] Trying to map heap data: region[3] at 0x00000000fff00000, size = 589824 bytes
[0.033s][info ][cds ] Trying to map heap data: region[5] at 0x00000000ffe00000, size = 524288 bytes
[0.033s][info ][cds ] optimized module handling: disabled
[0.033s][info ][cds ] full module graph: disabled
[0.033s][info ][cds ] Unmapping region #2 at base 0x0000fffce8020000 (Bitmap)
GenericTestApp started. WhiteBox = jdk.test.whitebox.WhiteBox@5acf9800
cdsMemoryMappingFailed() = false
passed: assertShared:java.lang.Object
passed: assertNotShared:GenericTestApp
];
 stderr: []
 exitValue = 0

java.lang.RuntimeException: '[warning][cds] shared class paths mismatch (hint: enable -Xlog:class+path=info to diagnose the failure)' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:221)
at jdk.test.lib.cds.CDSTestUtils.checkMatches(CDSTestUtils.java:494)
at jdk.test.lib.cds.CDSTestUtils$Result.assertNormalExit(CDSTestUtils.java:197)
at WrongTopClasspath.test(WrongTopClasspath.java:85)
at DynamicArchiveTestBase.runTest(DynamicArchiveTestBase.java:86)
at WrongTopClasspath.main(WrongTopClasspath.java:44)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:1589)

JavaTest Message: Test threw exception: java.lang.RuntimeException: '[warning][cds] shared class paths mismatch (hint: enable -Xlog:class+path=info to diagnose the failure)' missing from stdout/stderr

These two tests failed in jdk-20+11-617-tier4 and there's only
one new changeset in that build-ID:

JDK-8284313 Improve warning messages when CDS archive fails to load