[GitHub] [accumulo] keith-turner commented on a change in pull request #1018: Fix #976 - Expand overly broad Exceptions in Accumulo-core

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keith-turner commented on a change in pull request #1018: Fix #976 - Expand overly broad Exceptions in Accumulo-core
URL: https://github.com/apache/accumulo/pull/1018#discussion_r271485925
 
 

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 File path: core/src/main/java/org/apache/accumulo/fate/zookeeper/ZooLock.java
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 @@ -286,7 +286,7 @@ public void process(WatchedEvent event) {
                   else if (asyncLock != null)
                     failedToAcquireLock();
                 }
-              } catch (Throwable e) {
+              } catch (KeeperException | InterruptedException e) {
 
 Review comment:
   I don't think this catch should be narrowed because any unexpected runtime exception needs to be properly handled for zookeeper locks.  We don't want to ignore an NPE and think the lock is held when it is not.
   
   I worry about the correctness of this change because of possible issues like this.  Narrowing could lead to handling runtime exceptions differently which in some case could cause bugs.  Its hard to review all of the narrowing for correctness.

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