fix net_thread_count > 64 coredump

deps/easy/src/io/easy_io.c

@@ -55,7 +55,7 @@ easy_io_t* easy_eio_create(easy_io_t* eio, int io_thread_count)
   }
 
   if (io_thread_count <= 0 || io_thread_count > EASY_MAX_THREAD_CNT) {
-    io_thread_count = sysconf(_SC_NPROCESSORS_CONF);
+    io_thread_count = EASY_MAX_THREAD_CNT;
   }
 
   if ((pool = easy_pool_create(0)) == NULL) {

src/share/parameter/ob_parameter_seed.ipp

@@ -59,8 +59,8 @@ DEF_TIME(internal_sql_execute_timeout, OB_CLUSTER_PARAMETER, "30s", "[1000us, 10
     "the number of microseconds an internal DML request is permitted to "
     "execute before it is terminated. Range: [1000us, 10m]",
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
-DEF_INT(net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,128]",
-    "the number of rpc/mysql I/O threads for Libeasy. Range: [0, 128] in integer, 0 stands for max(6, CPU_NUM/8)",
+DEF_INT(net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,64]",
+    "the number of rpc/mysql I/O threads for Libeasy. Range: [0, 64] in integer, 0 stands for max(6, CPU_NUM/8)",
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
 DEF_INT(high_priority_net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,100]",
     "the number of rpc I/O threads for high priority messages, 0 means set off. Range: [0, 100] in integer",