[branch-2.0](timezone) refactor tzdata load to accelerate and unify t…

…imezone parsing (apache#37062) (apache#37270)

pick apache#37062

1. revert apache#25097. we decide to rely
on OS. not maintain independent tzdata anymore to keep result
consistency
2. refactor timezone load. removed rwlock.

before:
```sql
mysql [optest]>select count(convert_tz(d, 'Asia/Shanghai', 'America/Los_Angeles')), count(convert_tz(dt, 'America/Los_Angeles', '+00:00')) from dates;
+-------------------------------------------------------------------------------------+--------------------------------------------------------+
| count(convert_tz(cast(d as DATETIMEV2(6)), 'Asia/Shanghai', 'America/Los_Angeles')) | count(convert_tz(dt, 'America/Los_Angeles', '+00:00')) |
+-------------------------------------------------------------------------------------+--------------------------------------------------------+
|                                                                            16000000 |                                               16000000 |
+-------------------------------------------------------------------------------------+--------------------------------------------------------+
1 row in set (6.88 sec)
```
now:
```sql
mysql [optest]>select count(convert_tz(d, 'Asia/Shanghai', 'America/Los_Angeles')), count(convert_tz(dt, 'America/Los_Angeles', '+00:00')) from dates;
+-------------------------------------------------------------------------------------+--------------------------------------------------------+
| count(convert_tz(cast(d as DATETIMEV2(6)), 'Asia/Shanghai', 'America/Los_Angeles')) | count(convert_tz(dt, 'America/Los_Angeles', '+00:00')) |
+-------------------------------------------------------------------------------------+--------------------------------------------------------+
|                                                                            16000000 |                                               16000000 |
+-------------------------------------------------------------------------------------+--------------------------------------------------------+
1 row in set (2.61 sec)
```
3. now don't support timezone offset format string like 'UTC+8', like we
already said in
https://doris.apache.org/docs/dev/query/query-variables/time-zone/#usage
4. support case-insensitive timezone parsing in nereids.
5. a bug when parse timezone using nereids. should check DST by input,
but wrongly by now before. now fixed.

doc pr: apache/doris-website#810

.gitignore

@@ -94,7 +94,6 @@ be/tags
 be/test/olap/test_data/tablet_meta_test.hdr
 be/.devcontainer/
 be/src/apache-orc/
-zoneinfo/
 
 ## tools
 tools/ssb-tools/ssb-data/

be/src/common/config.cpp

@@ -1129,10 +1129,6 @@ DEFINE_Bool(exit_on_exception, "false");
 
 DEFINE_Bool(ignore_always_true_predicate_for_segment, "true");
 
-// Dir of default timezone files
-DEFINE_String(default_tzfiles_path, "${DORIS_HOME}/zoneinfo");
-DEFINE_Bool(use_doris_tzfile, "false");
-
 // the max package bytes be thrift server can receive
 // avoid accepting error or too large package causing OOM,default 20000000(20M)
 DEFINE_Int32(be_thrift_max_pkg_bytes, "20000000");

be/src/common/config.h

@@ -1179,10 +1179,6 @@ DECLARE_mBool(exit_on_exception);
 // Remove predicate that is always true for a segment.
 DECLARE_Bool(ignore_always_true_predicate_for_segment);
 
-// Dir of default timezone files
-DECLARE_String(default_tzfiles_path);
-DECLARE_Bool(use_doris_tzfile);
-
 // the max package bytes be thrift server can receive
 // avoid accepting error or too large package causing OOM,default 20000000(20M)
 DECLARE_Int32(be_thrift_max_pkg_bytes);

be/src/runtime/exec_env_init.cpp

@@ -118,7 +118,6 @@ Status ExecEnv::_init(const std::vector<StorePath>& store_paths) {
     _frontend_client_cache = new FrontendServiceClientCache(config::max_client_cache_size_per_host);
     _broker_client_cache = new BrokerServiceClientCache(config::max_client_cache_size_per_host);
 
-    TimezoneUtils::load_timezone_names();
     TimezoneUtils::load_timezones_to_cache();
 
     ThreadPoolBuilder("SendBatchThreadPool")