exmy commented on code in PR #5787:
URL: https://github.com/apache/incubator-gluten/pull/5787#discussion_r1604328001
##########
gluten-core/src/main/java/org/apache/gluten/vectorized/JniLibLoader.java:
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@@ -125,13 +139,10 @@ public static synchronized void unloadFromPath(String
libPath) {
return;
}
+ LOG.info("Starting unload library path: {} ", libPath);
REQUIRE_UNLOAD_LIBRARY_PATHS.remove(libPath);
try {
- while (Files.isSymbolicLink(Paths.get(libPath))) {
Review Comment:
When running on yarn cluster, `libPath` is a symbolic link existed on the
working directory of yarn container, like
`/data5/hadoop/yarn/local/usercache/xumingyong/appcache/application_1710462985812_777680/container_e57_1710462985812_777680_01_000321/./libch.so`.
It's an `APPLICATION` level resource and will be removed when container exits.
So it may have been removed here when reading real path, which causes
`Files.isSymbolicLink(Paths.get(libPath))` return false in that the library
cannot be unload. As a workaround, we can read real path when loading the
library.
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