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Robert Scholte commented on MASSEMBLY-851: ------------------------------------------ I haven't been able to reproduce it on my Windows machine. bq. Under certain circumstances ... Any clue which circumstances? Looks like it has happened a few times, not 100% reproducible. > "Unextractable" JAR files created by assembly:single > ---------------------------------------------------- > > Key: MASSEMBLY-851 > URL: https://issues.apache.org/jira/browse/MASSEMBLY-851 > Project: Maven Assembly Plugin > Issue Type: Bug > Affects Versions: 3.0.0 > Environment: Apache Maven 3.3.9 > (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T17:41:47+01:00) > Java version: 1.8.0_121, vendor: Oracle Corporation > Default locale: de_DE, platform encoding: UTF-8 > OS name: "linux", version: "4.8.0-41-generic", arch: "amd64", family: "unix" > Reporter: Tom Wieczorek > > Under certain circumstances, {{assembly:single}} generates "unextractable" > JAR files, because of some directory entries in the JAR file are not ending > with a slash, hence they're treated as file entries. > If such a JAR file is tried to be extracted via the {{jar}} executable, an > Exception is thrown and extraction is aborted: > {code} > java.io.FileNotFoundException: META-INF/maven (Is a directory) > at java.io.FileOutputStream.open0(Native Method) > at java.io.FileOutputStream.open(FileOutputStream.java:270) > at java.io.FileOutputStream.<init>(FileOutputStream.java:213) > at java.io.FileOutputStream.<init>(FileOutputStream.java:162) > at sun.tools.jar.Main.copy(Main.java:909) > at sun.tools.jar.Main.extractFile(Main.java:1069) > at sun.tools.jar.Main.extract(Main.java:981) > at sun.tools.jar.Main.run(Main.java:311) > at sun.tools.jar.Main.main(Main.java:1288) > {code} > A [sample project|https://github.com/twz123/broken-assembly] is on GitHub. -- This message was sent by Atlassian JIRA (v6.3.15#6346)