[GitHub] [doris] zhangyongxianggithub commented on issue #9839: [Bug]Report No Doris FE is avaliable，actually the fe and be is running

[GitBox <gi...@apache.org>]

zhangyongxianggithub commented on issue #9839:
URL: https://github.com/apache/doris/issues/9839#issuecomment-1290200774

   I had the same problem and solved this bug，fellow is my solution，the reason ：
   doris fe server version is too low and your jar version is new。
   the problem file is org.apache.doris.flink.rest.RestService，fellow:
   ```java
       public static String randomBackend(DorisOptions options, DorisReadOptions readOptions, Logger logger) throws DorisException, IOException {
           List<BackendV2.BackendRowV2> backends = getBackendsV2(options, readOptions, logger);
           logger.trace("Parse beNodes '{}'.", backends);
           if (backends == null || backends.isEmpty()) {
               logger.error(ILLEGAL_ARGUMENT_MESSAGE, "beNodes", backends);
               throw new IllegalArgumentException("beNodes", String.valueOf(backends));
           }
           Collections.shuffle(backends);
           BackendV2.BackendRowV2 backend = backends.get(0);
           return backend.getIp() + ":" + backend.getHttpPort();
       }
   ```
   there is two getBackends[V2] methods, one is getBackends() for old version doris fe, another is getBackendsV2() for newer version doris fe. the diffierences between them is url. method getBackends() will visist /rest/v1/system?path=//backends, method  getBackendsV2() will visit /api/backends?is_alive=true, if your doris fe version is too low, your call to getBackendsV2() will get 404.so you can write a org.apache.doris.flink.rest.RestService or upgrade doris version


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