[Fix](multi-catalog) delete hdfs hedged configs at BE side. (#25094)

Issue Number: close #25093 

We can set hdfs hedged configs when creating catalog, just like this:
```
CREATE CATALOG `test_ctl` PROPERTIES (
...
"dfs.client.hedged.read.threadpool.size" = "128",
"dfs.client.hedged.read.threshold.millis" = "500",
...
);
```
It is redundant to set these configs at BE side, and it will brings an occasional bug at #25093 .

be/src/common/config.cpp

@@ -1071,10 +1071,6 @@ DEFINE_mInt64(lookup_connection_cache_bytes_limit, "4294967296");
 // level of compression when using LZ4_HC, whose defalut value is LZ4HC_CLEVEL_DEFAULT
 DEFINE_mInt64(LZ4_HC_compression_level, "9");
 
-DEFINE_Bool(enable_hdfs_hedged_read, "false");
-DEFINE_Int32(hdfs_hedged_read_thread_num, "128");
-DEFINE_Int32(hdfs_hedged_read_threshold_time, "500");
-
 DEFINE_mBool(enable_merge_on_write_correctness_check, "true");
 
 // The secure path with user files, used in the `local` table function.

be/src/common/config.h

@@ -1127,16 +1127,6 @@ DECLARE_mInt64(lookup_connection_cache_bytes_limit);
 // level of compression when using LZ4_HC, whose defalut value is LZ4HC_CLEVEL_DEFAULT
 DECLARE_mInt64(LZ4_HC_compression_level);
 
-// whether to enable hdfs hedged read.
-// If set to true, it will be enabled even if user not enable it when creating catalog
-DECLARE_Bool(enable_hdfs_hedged_read);
-// hdfs hedged read thread pool size, for "dfs.client.hedged.read.threadpool.size"
-// Maybe overwritten by the value specified when creating catalog
-DECLARE_Int32(hdfs_hedged_read_thread_num);
-// the threshold of doing hedged read, for "dfs.client.hedged.read.threshold.millis"
-// Maybe overwritten by the value specified when creating catalog
-DECLARE_Int32(hdfs_hedged_read_threshold_time);
-
 DECLARE_mBool(enable_merge_on_write_correctness_check);
 
 // The secure path with user files, used in the `local` table function.

be/src/io/hdfs_builder.cpp

@@ -146,17 +146,6 @@ Status create_hdfs_builder(const THdfsParams& hdfsParams, const std::string& fs_
         }
     }
 
-#ifdef USE_HADOOP_HDFS
-    if (config::enable_hdfs_hedged_read) {
-        hdfsBuilderConfSetStr(builder->get(), "dfs.client.hedged.read.threadpool.size",
-                              std::to_string(config::hdfs_hedged_read_thread_num).c_str());
-        hdfsBuilderConfSetStr(builder->get(), "dfs.client.hedged.read.threshold.millis",
-                              std::to_string(config::hdfs_hedged_read_threshold_time).c_str());
-        LOG(INFO) << "set hdfs hedged read config: " << config::hdfs_hedged_read_thread_num << ", "
-                  << config::hdfs_hedged_read_threshold_time;
-    }
-#endif
-
     hdfsBuilderConfSetStr(builder->get(), "ipc.client.fallback-to-simple-auth-allowed", "true");
 
     if (builder->is_need_kinit()) {

docs/en/docs/lakehouse/faq.md

@@ -259,16 +259,6 @@ under the License.
 
          `dfs.client.hedged.read.threshold.millis` is the read threshold in milliseconds. When a read request exceeds this threshold and is not returned, Hedged Read will be triggered.
 
-     - Configure parameters in be.conf
-
-         ```
-         enable_hdfs_hedged_read = true
-         hdfs_hedged_read_thread_num = 128
-         hdfs_hedged_read_threshold_time = 500
-         ```
-
-         This method will enable Hedged Read globally on BE nodes (not enabled by default). And ignore the Hedged Read property set when creating the Catalog.
-
      After enabling it, you can see related parameters in Query Profile:
 
      `TotalHedgedRead`: The number of Hedged Reads initiated.

docs/zh-CN/docs/lakehouse/faq.md

@@ -253,16 +253,7 @@ under the License.
         `dfs.client.hedged.read.threadpool.size` 表示用于 Hedged Read 的线程数，这些线程由一个 HDFS Client 共享。通常情况下，针对一个 HDFS 集群，BE 节点会共享一个 HDFS Client。
 
         `dfs.client.hedged.read.threshold.millis` 是读取阈值，单位毫秒。当一个读请求超过这个阈值未返回时，会触发 Hedged Read。
-
-    - 在 be.conf 中配置参数
-
-        ```
-        enable_hdfs_hedged_read = true
-        hdfs_hedged_read_thread_num = 128
-        hdfs_hedged_read_threshold_time = 500
-        ```
-
-        这种方式会在BE节点全局开启 Hedged Read（默认不开启）。并忽略在创建 Catalog 时设置的 Hedged Read 属性。
+   
 
     开启后，可以在 Query Profile 中看到相关参数：