### Elasticsearch Version

7.17.5

### Installed Plugins

_No response_

### Java Version

18.0.1.1

### OS Version

3.10.0-1160.76.1.el7.x86_64 

### Problem Description

[https://discuss.elastic.co/t/why-conf-dfs-replication-1-is-not-success/316405](url)

conf.dfs.replication = 1 is not be used


 protected HdfsBlobStore createBlobStore() {
        // initialize our blobstore using elevated privileges.
        SpecialPermission.check();
        final HdfsBlobStore blobStore = AccessController.doPrivileged(
            (PrivilegedAction<HdfsBlobStore>) () -> createBlobstore(uri, pathSetting, getMetadata().settings())
        );

     final Settings confSettings = repositorySettings.getByPrefix("conf.");
        for (String key : confSettings.keySet()) {
            logger.debug("Adding configuration to HDFS Client Configuration : {} = {}", key, confSettings.get(key));
            hadoopConfiguration.set(key, confSettings.get(key));
        }




### Steps to Reproduce

snapshots

### Logs (if relevant)

_No response_
plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsBlobContainer.java
public int read(byte b[]) throws IOException {
            return securityContext.doPrivilegedOrThrow(() -> in.read(b));
        }
        public int read(byte b[], int off, int len) throws IOException {
            return securityContext.doPrivilegedOrThrow(() -> in.read(b, off, len));
        }
        public long skip(long n) throws IOException {
            return securityContext.doPrivilegedOrThrow(() -> in.skip(n));
        }
        public int available() throws IOException {
            return securityContext.doPrivilegedOrThrow(() -> in.available());
        }
        public synchronized void reset() throws IOException {
            securityContext.doPrivilegedOrThrow(() -> {
                in.reset();
                return null;
            });
        }
    }
    @Override
    public void compareAndExchangeRegister(
        String key,
        BytesReference expected,
        BytesReference updated,
        ActionListener<OptionalBytesReference> listener
    ) {
        listener.onFailure(new UnsupportedOperationException("HDFS repositories do not support this operation"));
    }
}