[GitHub] [skywalking] wu-sheng commented on pull request #8177: Update GRPCExporter.java

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

wu-sheng commented on pull request #8177:
URL: https://github.com/apache/skywalking/pull/8177#issuecomment-977465611


   Please take a look at `ReentrantLock` comments in JDK.
   
   ```java
    * <p>It is recommended practice to <em>always</em> immediately
    * follow a call to {@code lock} with a {@code try} block, most
    * typically in a before/after construction such as:
    *
    * <pre> {@code
    * class X {
    *   private final ReentrantLock lock = new ReentrantLock();
    *   // ...
    *
    *   public void m() {
    *     lock.lock();  // block until condition holds
    *     try {
    *       // ... method body
    *     } finally {
    *       lock.unlock()
    *     }
    *   }
    * }}</pre>
   ```


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