belugabehr commented on a change in pull request #807:
URL: https://github.com/apache/hive/pull/807#discussion_r434678396
##########
File path: serde/src/java/org/apache/hadoop/hive/serde2/avro/InstanceCache.java
##########
@@ -51,20 +51,19 @@ public Instance retrieve(SeedObject hv) throws
AvroSerdeException {
* Retrieve (or create if it doesn't exist) the correct Instance for this
* SeedObject using 'seenSchemas' to resolve circular references
*/
- public synchronized Instance retrieve(SeedObject hv,
- Set<SeedObject> seenSchemas) throws AvroSerdeException {
+ public Instance retrieve(SeedObject hv, Set<SeedObject> seenSchemas)
+ throws AvroSerdeException {
if(LOG.isDebugEnabled()) LOG.debug("Checking for hv: " + hv.toString());
Review comment:
Please change this (and the rest) to:
`
LOG.debug("Checking for hv: {}", hv);
`
http://www.slf4j.org/faq.html#logging_performance
##########
File path: serde/src/java/org/apache/hadoop/hive/serde2/avro/InstanceCache.java
##########
@@ -51,20 +51,19 @@ public Instance retrieve(SeedObject hv) throws
AvroSerdeException {
* Retrieve (or create if it doesn't exist) the correct Instance for this
* SeedObject using 'seenSchemas' to resolve circular references
*/
- public synchronized Instance retrieve(SeedObject hv,
- Set<SeedObject> seenSchemas) throws AvroSerdeException {
+ public Instance retrieve(SeedObject hv, Set<SeedObject> seenSchemas)
+ throws AvroSerdeException {
if(LOG.isDebugEnabled()) LOG.debug("Checking for hv: " + hv.toString());
if(cache.containsKey(hv)) {
Review comment:
Please leverage `Map#computeIfAbsent` here
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