hachikuji commented on a change in pull request #10909:
URL: https://github.com/apache/kafka/pull/10909#discussion_r679391787
##########
File path: raft/src/main/java/org/apache/kafka/raft/ReplicatedCounter.java
##########
@@ -61,10 +61,12 @@ public synchronized void increment() {
int epoch = claimedEpoch.getAsInt();
uncommitted += 1;
- Long offset = client.scheduleAppend(epoch, singletonList(uncommitted));
- if (offset != null) {
+ try {
+ long offset = client.scheduleAppend(epoch,
singletonList(uncommitted));
log.debug("Scheduled append of record {} with epoch {} at offset
{}",
uncommitted, epoch, offset);
+ } catch (IllegalStateException e) {
Review comment:
How about we catch `Exception` generally?
##########
File path:
raft/src/main/java/org/apache/kafka/raft/internals/BatchAccumulator.java
##########
@@ -148,7 +150,7 @@ private Long append(int epoch, List<T> records, boolean
isAtomic) {
}
if (batch == null) {
- return null;
+ throw new IllegalStateException("Append failed because we
failed to allocate memory to write the batch");
Review comment:
I wonder if it is worthwhile introducing some custom raft exception
types for these two cases. At a minimum, that would let us improve the
assertions. Maybe `NotLeaderException` and `BufferAllocationException` or
something like that?
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