### What changes were proposed in this pull request?
As title
### Why are the changes needed?
Recently, while conducting the sbt build test, it came to my attention that certain resources such as ports and threads were not being released promptly.
This pull request introduces a new method, `shutdown(graceful: Boolean)`, to the `Service` trait. When invoked by `MiniClusterFeature.shutdownMiniCluster`, it calls `worker.shutdown(graceful = false)`. This implementation aims to prevent possible memory leaks during CI processes.
Before this PR the unit tests in the `client/common/master/service/worker` modules resulted in leaked ports.
```
$ jps
1138131 Jps
1130743 sbt-launch-1.9.0.jar
$ netstat -lntp | grep 1130743
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 127.0.0.1:12345 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:41563 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:42905 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:44419 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:45025 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:44799 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:39053 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:39029 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:39475 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:40153 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:33051 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:33449 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:34073 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:35347 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:35971 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 0.0.0.0:36799 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 192.168.1.151:40775 0.0.0.0:* LISTEN 1130743/java
tcp 0 0 192.168.1.151:44457 0.0.0.0:* LISTEN 1130743/java
```
After this PR:
```
$ jps
1114423 Jps
1107544 sbt-launch-1.9.0.jar
$ netstat -lntp | grep 1107544
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
```
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Pass GA
Closes#1727 from cfmcgrady/shutdown.
Authored-by: Fu Chen <cfmcgrady@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
### What changes were proposed in this pull request?
Unify all blacklist related code and comment
### Why are the changes needed?
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
Closes#1638 from AngersZhuuuu/CELEBORN-666-FOLLOWUP.
Authored-by: Angerszhuuuu <angers.zhu@gmail.com>
Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
### What changes were proposed in this pull request?
`SimpleDateFormat` is not thread-safe, replace it with a thread-safe `FastDateFormat`
### Why are the changes needed?
`FastDateFormat` is a fast and thread-safe version of `java.text.SimpleDateFormat`.
### Does this PR introduce _any_ user-facing change?
Yes, it's a bug fix.
### How was this patch tested?
Manually review.
Closes#1545 from pan3793/CELEBORN-636.
Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Ethan Feng <ethanfeng@apache.org>
