jnturton commented on code in PR #2800:
URL: https://github.com/apache/drill/pull/2800#discussion_r1189578197
##########
exec/java-exec/src/main/java/org/apache/drill/exec/store/http/oauth/OAuthUtils.java:
##########
@@ -36,6 +37,7 @@
public class OAuthUtils {
private static final Logger logger =
LoggerFactory.getLogger(OAuthUtils.class);
+ private static final ObjectMapper MAPPER = JacksonUtils.createObjectMapper();
Review Comment:
Hmm, reading [on little](https://stackoverflow.com/a/36162525/1153953)
reveals that lock contention in a shared ObjectMapper degrades performance for
multithreaded applications . Now I'm in two minds.
##########
exec/java-exec/src/main/java/org/apache/drill/exec/store/http/oauth/OAuthUtils.java:
##########
@@ -36,6 +37,7 @@
public class OAuthUtils {
private static final Logger logger =
LoggerFactory.getLogger(OAuthUtils.class);
+ private static final ObjectMapper MAPPER = JacksonUtils.createObjectMapper();
Review Comment:
Hmm, reading [on a little](https://stackoverflow.com/a/36162525/1153953)
reveals that lock contention in a shared ObjectMapper degrades performance for
multithreaded applications . Now I'm in two minds.
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