[bookkeeper] branch master updated: Adjust log stack output (#3496)

[yong]

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yong pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/bookkeeper.git


The following commit(s) were added to refs/heads/master by this push:
     new cbb74eab4f Adjust log stack output (#3496)
cbb74eab4f is described below

commit cbb74eab4f1f464c0e4760acf9304af2289acfa1
Author: wenbingshen <oliver.shen...@gmail.com>
AuthorDate: Mon Oct 17 12:37:29 2022 +0800

    Adjust log stack output (#3496)
    
    ### Motivation
    The default `dnsResolver` of `RackawareEnsemblePlacementPolicyImpl` is 
initialized as `ScriptBasedMapping`. Since the script is missing by default, 
detailed stack information will be printed, but the code will fall back to 
`DefaultResolver` by default, so only simple exception information needs to be 
printed.
    
![image](https://user-images.githubusercontent.com/35599757/191254546-54395f24-5e64-4d89-9bcd-61eb9308c91e.png)
---
 .../bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
 
b/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
index d3d557d14b..9ad2502a95 100644
--- 
a/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
+++ 
b/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
@@ -270,8 +270,8 @@ public class RackawareEnsemblePlacementPolicyImpl extends 
TopologyAwareEnsembleP
                 }
             } catch (RuntimeException re) {
                 if (!conf.getEnforceMinNumRacksPerWriteQuorum()) {
-                    LOG.warn("Failed to initialize DNS Resolver {}, used 
default subnet resolver ",
-                            dnsResolverName, re);
+                    LOG.warn("Failed to initialize DNS Resolver {}, used 
default subnet resolver because {}",
+                            dnsResolverName, re.getMessage());
                     dnsResolver = new DefaultResolver(this::getDefaultRack);
                     
dnsResolver.setBookieAddressResolver(bookieAddressResolver);
                 } else {