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https://issues.apache.org/jira/browse/MBUILDCACHE-78?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17847275#comment-17847275
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Hongxin Liang commented on MBUILDCACHE-78:
------------------------------------------
I could still produce these two using 1.2.0 version.
For 1, I got this log:
{code:java}
[INFO] --------------------------< io.honnix:cache >---------------------------
[INFO] Building cache 1.0-SNAPSHOT [1/3]
[INFO] from pom.xml
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] ----------------------------< io.honnix:a >-----------------------------
[INFO] Building a 1.0-SNAPSHOT [2/3]
[INFO] from a/pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Loading cache configuration from
/Users/honnix/Developer/github/cache/.mvn/maven-build-cache-config.xml
[INFO] Using SHA-256 hash algorithm for cache
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=a]
[INFO] Scanning plugins configurations to find input files. Probing is enabled,
values will be checked for presence in file system
[INFO] Found 1 input files. Project dir processing: 1, plugins: 1 millis
[INFO] Project inputs calculated in 3 ms. SHA-256 checksum
[d94bcab16e7817cbb356a288016b80130c30e87d3c0e96f63347697334c206f5] calculated
in 1 ms.
[INFO] Attempting to restore project io.honnix:a from build cache
[INFO] Local build found by checksum
d94bcab16e7817cbb356a288016b80130c30e87d3c0e96f63347697334c206f5
[INFO] Found cached build, restoring io.honnix:a from cache by checksum
d94bcab16e7817cbb356a288016b80130c30e87d3c0e96f63347697334c206f5
[INFO] Skipping plugin execution (cached): resources:resources
[INFO] Skipping plugin execution (cached): compiler:compile
[INFO]
[INFO] ----------------------------< io.honnix:b >-----------------------------
[INFO] Building b 1.0-SNAPSHOT [3/3]
[INFO] from b/pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=b]
[INFO] Scanning plugins configurations to find input files. Probing is enabled,
values will be checked for presence in file system
[INFO] Found 1 input files. Project dir processing: 1, plugins: 1 millis
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=a]
[INFO] Project inputs calculated in 2 ms. SHA-256 checksum
[8a63d23bd4e2fb7162d1e6ef5d415a8b35527fc13c1b58122e2af25f52d53de0] calculated
in 0 ms.
[INFO] Attempting to restore project io.honnix:b from build cache
[INFO] Local build was not found by checksum
8a63d23bd4e2fb7162d1e6ef5d415a8b35527fc13c1b58122e2af25f52d53de0 for io.honnix:b
[INFO] Downloading from repo: ...
[INFO] Downloading from repo: ...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for cache 1.0-SNAPSHOT:
[INFO]
[INFO] cache .............................................. SUCCESS [ 0.000 s]
[INFO] a .................................................. SUCCESS [ 0.012 s]
[INFO] b .................................................. FAILURE [ 16.822 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 16.845 s (Wall Clock)
[INFO] Finished at: 2024-05-17T14:34:19+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project b: Could not resolve dependencies for
project io.honnix:b:jar:1.0-SNAPSHOT: The following artifacts could not be
resolved: io.honnix:a:jar:1.0-SNAPSHOT (absent): Could not find artifact
io.honnix:a:jar:1.0-SNAPSHOT in repo (...) -> [Help 1]
{code}
For 2, I got this log:
{code:java}
$ mvn compile
[INFO] Scanning for projects...
[INFO] BuildTimeEventSpy is registered.
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] cache [pom]
[INFO] a [jar]
[INFO] b [jar]
[INFO]
[INFO] Using the SmartBuilder implementation with a thread count of 11
[INFO]
[INFO] --------------------------< io.honnix:cache >---------------------------
[INFO] Building cache 1.0-SNAPSHOT [1/3]
[INFO] from pom.xml
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] ----------------------------< io.honnix:a >-----------------------------
[INFO] Building a 1.0-SNAPSHOT [2/3]
[INFO] from a/pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Loading cache configuration from
/Users/honnix/Developer/github/cache/.mvn/maven-build-cache-config.xml
[INFO] Using SHA-256 hash algorithm for cache
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=a]
[INFO] Scanning plugins configurations to find input files. Probing is enabled,
values will be checked for presence in file system
[INFO] Found 1 input files. Project dir processing: 2, plugins: 0 millis
[INFO] Project inputs calculated in 2 ms. SHA-256 checksum
[c314c8ae60babb75456ed81056b4c11fe52c0b74d713a623cee87361768a672c] calculated
in 0 ms.
[INFO] Attempting to restore project io.honnix:a from build cache
[INFO] Local build was not found by checksum
c314c8ae60babb75456ed81056b4c11fe52c0b74d713a623cee87361768a672c for io.honnix:a
[INFO]
[INFO] --- resources:3.3.1:resources (default-resources) @ a ---
[INFO] skip non existing resourceDirectory
/Users/honnix/Developer/github/cache/a/src/main/resources
[INFO]
[INFO] --- compiler:3.11.0:compile (default-compile) @ a ---
[INFO] Changes detected - recompiling the module! :source
[INFO] Compiling 1 source file with javac [debug release 17] to target/classes
[INFO] Saved Build to local file:
/Users/honnix/.m2/build-cache/v1/io.honnix/a/c314c8ae60babb75456ed81056b4c11fe52c0b74d713a623cee87361768a672c/local/buildinfo.xml
[INFO]
[INFO] ----------------------------< io.honnix:b >-----------------------------
[INFO] Building b 1.0-SNAPSHOT [3/3]
[INFO] from b/pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=b]
[INFO] Scanning plugins configurations to find input files. Probing is enabled,
values will be checked for presence in file system
[INFO] Found 1 input files. Project dir processing: 0, plugins: 1 millis
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=a]
[INFO] Project inputs calculated in 2 ms. SHA-256 checksum
[8bffbe36857d63a0897bc4a9b69f2e2beb50c5170043ad7de09a01e2d790da85] calculated
in 0 ms.
[INFO] Attempting to restore project io.honnix:b from build cache
[INFO] Local build was not found by checksum
8bffbe36857d63a0897bc4a9b69f2e2beb50c5170043ad7de09a01e2d790da85 for io.honnix:b
[INFO]
[INFO] --- resources:3.3.1:resources (default-resources) @ b ---
[INFO] skip non existing resourceDirectory
/Users/honnix/Developer/github/cache/b/src/main/resources
[INFO]
[INFO] --- compiler:3.11.0:compile (default-compile) @ b ---
[INFO] Changes detected - recompiling the module! :dependency
[INFO] Compiling 1 source file with javac [debug release 17] to target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR]
/Users/honnix/Developer/github/cache/b/src/main/java/io/honnix/B.java:[7,13]
cannot find symbol
symbol: method a()
location: class io.honnix.A
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for cache 1.0-SNAPSHOT:
[INFO]
[INFO] cache .............................................. SUCCESS [ 0.001 s]
[INFO] a .................................................. SUCCESS [ 0.039 s]
[INFO] b .................................................. FAILURE [ 0.025 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.075 s (Wall Clock)
[INFO] Finished at: 2024-05-17T14:39:43+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.11.0:compile (default-compile)
on project b: Compilation failure
[ERROR]
/Users/honnix/Developer/github/cache/b/src/main/java/io/honnix/B.java:[7,13]
cannot find symbol
[ERROR] symbol: method a()
[ERROR] location: class io.honnix.A
[ERROR]
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <args> -r
$ mvn compile
[INFO] Scanning for projects...
[INFO] BuildTimeEventSpy is registered.
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] cache [pom]
[INFO] a [jar]
[INFO] b [jar]
[INFO]
[INFO] Using the SmartBuilder implementation with a thread count of 11
[INFO]
[INFO] --------------------------< io.honnix:cache >---------------------------
[INFO] Building cache 1.0-SNAPSHOT [1/3]
[INFO] from pom.xml
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] ----------------------------< io.honnix:a >-----------------------------
[INFO] Building a 1.0-SNAPSHOT [2/3]
[INFO] from a/pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Loading cache configuration from
/Users/honnix/Developer/github/cache/.mvn/maven-build-cache-config.xml
[INFO] Using SHA-256 hash algorithm for cache
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=a]
[INFO] Scanning plugins configurations to find input files. Probing is enabled,
values will be checked for presence in file system
[INFO] Found 1 input files. Project dir processing: 1, plugins: 0 millis
[INFO] Project inputs calculated in 2 ms. SHA-256 checksum
[c314c8ae60babb75456ed81056b4c11fe52c0b74d713a623cee87361768a672c] calculated
in 1 ms.
[INFO] Attempting to restore project io.honnix:a from build cache
[INFO] Local build found by checksum
c314c8ae60babb75456ed81056b4c11fe52c0b74d713a623cee87361768a672c
[INFO] Found cached build, restoring io.honnix:a from cache by checksum
c314c8ae60babb75456ed81056b4c11fe52c0b74d713a623cee87361768a672c
[INFO] Skipping plugin execution (cached): resources:resources
[INFO] Skipping plugin execution (cached): compiler:compile
[INFO]
[INFO] ----------------------------< io.honnix:b >-----------------------------
[INFO] Building b 1.0-SNAPSHOT [3/3]
[INFO] from b/pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=b]
[INFO] Scanning plugins configurations to find input files. Probing is enabled,
values will be checked for presence in file system
[INFO] Found 1 input files. Project dir processing: 1, plugins: 0 millis
[INFO] Going to calculate checksum for project [groupId=io.honnix, artifactId=a]
[INFO] Project inputs calculated in 2 ms. SHA-256 checksum
[8bffbe36857d63a0897bc4a9b69f2e2beb50c5170043ad7de09a01e2d790da85] calculated
in 1 ms.
[INFO] Attempting to restore project io.honnix:b from build cache
[INFO] Local build was not found by checksum
8bffbe36857d63a0897bc4a9b69f2e2beb50c5170043ad7de09a01e2d790da85 for io.honnix:b
[INFO]
[INFO] --- resources:3.3.1:resources (default-resources) @ b ---
[INFO] skip non existing resourceDirectory
/Users/honnix/Developer/github/cache/b/src/main/resources
[INFO]
[INFO] --- compiler:3.11.0:compile (default-compile) @ b ---
[INFO] Changes detected - recompiling the module! :source
[INFO] Compiling 1 source file with javac [debug release 17] to target/classes
[INFO] Saved Build to local file:
/Users/honnix/.m2/build-cache/v1/io.honnix/b/8bffbe36857d63a0897bc4a9b69f2e2beb50c5170043ad7de09a01e2d790da85/local/buildinfo.xml
[INFO] ------------------------------------------------------------------------
[INFO] Average project wall time: 0,00s
[INFO] Total concurrency: 9 %
[INFO] Bottleneck projects that decrease concurrency: (run build with
-Dsmartbuilder.profiling=true for further details)
[INFO] - io.honnix:b:1.0-SNAPSHOT
[INFO] - io.honnix:a:1.0-SNAPSHOT
[INFO] - io.honnix:cache:1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for cache 1.0-SNAPSHOT:
[INFO]
[INFO] cache .............................................. SUCCESS [ 0.000 s]
[INFO] a .................................................. SUCCESS [ 0.008 s]
[INFO] b .................................................. SUCCESS [ 0.037 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.054 s (Wall Clock)
[INFO] Finished at: 2024-05-17T14:39:51+02:00
[INFO] ------------------------------------------------------------------------
{code}
In general I have a feeling it doesn't play well with maven reactor.
> Maven reactor doesn't work well for a multimodule project when enabling build
> cache
> -----------------------------------------------------------------------------------
>
> Key: MBUILDCACHE-78
> URL: https://issues.apache.org/jira/browse/MBUILDCACHE-78
> Project: Maven Build Cache Extension
> Issue Type: Bug
> Affects Versions: 1.1.0
> Environment: macOS Sonama, Java 17, Maven 3.9.6
> Reporter: Hongxin Liang
> Priority: Critical
>
> In a multimodule project, as a simplest example:
> [https://github.com/honnix/cache|https://github.com/honnix/cache] , "mvn
> compile" with build cache enabled doesn't play well with Maven reactor. A few
> scenarios I have tested in the provided repro example:
> # With a clean environment (no build cache, no "mvn install" have been done)
> ## Run "mvn compile" and everything works
> ## Modify (putting a random empty line will suffice) class "B" in module "b"
> ## Run "mvn compile" again, and now it fails when trying to download
> snapshot of module "a" from maven central (after failing to find that in my
> local repo)
> # With a clean environment (no build cache)
> ## Run "mvn install" and everything works
> ## Modify class "A" in module "a" to rename the method
> ## Run "mvn compile" for the first time, and it fails to compile due to
> renaming of the method in class "A"
> ## Run "mvn compile" for the second time, nothing fails but apparent the
> code is still wrong; run more "mvn compile" and still nothing fails
> ## Running "mvn install" fails the build due to compilation error
> I'm not entirely sure I am doing things properly and I'm not sure whether the
> config is correct either (I took the example as
> [https://maven.apache.org/extensions/maven-build-cache-extension/maven-build-cache-config.xml]
> with modification to disable remote cache).
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