apache/hadoop · error

testLibHdfs: some threads failed: [

Error message

testLibHdfs: some threads failed: [

What it means

Error "testLibHdfs: some threads failed: [" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfs-tests/test_libhdfs_threaded.c:387

    int ret = testHdfsOperationsImpl(ti);
    ti->success = ret;
}

static int checkFailures(struct tlhThreadInfo *ti, int tlhNumThreads)
{
    int i, threadsFailed = 0;
    const char *sep = "";

    for (i = 0; i < tlhNumThreads; i++) {
        if (ti[i].success != 0) {
            threadsFailed = 1;
        }
    }
    if (!threadsFailed) {
        fprintf(stderr, "testLibHdfs: all threads succeeded.  SUCCESS.\n");
        return EXIT_SUCCESS;
    }
    fprintf(stderr, "testLibHdfs: some threads failed: [");
    for (i = 0; i < tlhNumThreads; i++) {
        if (ti[i].success != 0) {
            fprintf(stderr, "%s%d", sep, i);
            sep = ", ";
        }
    }
    fprintf(stderr, "].  FAILURE.\n");
    return EXIT_FAILURE;
}

int testRecursiveJvmMutex() {
    jthrowable jthr;
    JNIEnv *env = getJNIEnv();
    if (!env) {
        fprintf(stderr, "testRecursiveJvmMutex: getJNIEnv failed\n");
        return -EIO;
    }
    jthr = newRuntimeError(env, "Dummy error to print for testing");

View on GitHub (pinned to 2add963021)

Solutions

1. Inspect the per-thread error lines printed before this summary; each failing thread logs its own hdfsRead/hdfsPread errno.
2. Run the test with a single thread (-t 1) to isolate whether the failure is thread-related or a plain HDFS error.
3. Confirm the test file size and read length arguments match what was written by the setup phase.

When it happens

Trigger: Printed when one or more worker threads in testLibHdfs reported a failure after joining.

Common situations: Happens when any of hdfsRead, hdfsPread, hdfsSeek, or hdfsClose failed inside a worker thread during the threaded read test.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/ace4b5d72c696513. Report an issue: GitHub.