Abacn commented on code in PR #28122:
URL: https://github.com/apache/beam/pull/28122#discussion_r1303307732
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sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigtable/BigtableServiceFactory.java:
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@@ -105,8 +106,12 @@ BigtableServiceEntry getServiceForReading(
BigtableServiceEntry entry = entries.get(configId.id());
if (entry != null) {
// When entry is not null, refCount.get(configId.id()) should always
exist.
- // Do a getOrDefault to avoid unexpected NPEs.
- refCounts.getOrDefault(configId.id(), new
AtomicInteger(0)).getAndIncrement();
+ Preconditions.checkNotNull(
+ refCounts.get(configId.id()),
Review Comment:
Though here is in synchronized block, assign a local variable to
checkNotNull(refCounts.get(configId.id())) then call getAndIncrement on. this
varaible. This is the canonical use of checkNotNull
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