eolivelli commented on code in PR #17753:
URL: https://github.com/apache/pulsar/pull/17753#discussion_r979401626
##########
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/PositionImpl.java:
##########
@@ -94,6 +94,14 @@ public PositionImpl getNext() {
}
}
+ public PositionImpl getPositionAfterEntries(int entryNum) {
+ if (entryId < 0) {
Review Comment:
This is not correct
##########
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/OpReadEntry.java:
##########
@@ -100,8 +100,8 @@ public void readEntriesFailed(ManagedLedgerException
exception, Object ctx) {
} else if (cursor.config.isAutoSkipNonRecoverableData() && exception
instanceof NonRecoverableLedgerException) {
log.warn("[{}][{}] read failed from ledger at position:{} : {}",
cursor.ledger.getName(), cursor.getName(),
readPosition, exception.getMessage());
- // try to find and move to next valid ledger
- final Position nexReadPosition =
cursor.getNextLedgerPosition(readPosition.getLedgerId());
+ // Skip this read operation
+ PositionImpl nexReadPosition =
cursor.ledger.getValidPositionAfterSkippedEntries(readPosition, count);
Review Comment:
Please do not access a field, use a getter
##########
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerImpl.java:
##########
@@ -3445,6 +3445,32 @@ public PositionImpl getNextValidPosition(final
PositionImpl position) {
return next;
}
+ public PositionImpl getValidPositionAfterSkippedEntries(final PositionImpl
position, int skippedEntryNum) {
+ PositionImpl skippedPosition;
+ try {
+ skippedPosition = getValidPositionInternal(position,
skippedEntryNum);
+ } catch (NullPointerException e) {
+ skippedPosition = lastConfirmedEntry.getNext();
+ if (log.isDebugEnabled()) {
+ log.debug("[{}] Can't find valid position : {}, fall back to
the next position of the last "
+ + "position : {}.", position, name, skippedPosition,
e);
+ }
+ }
+ return skippedPosition;
+ }
+
+ public PositionImpl getValidPositionInternal(final PositionImpl position,
int skippedEntryNum) {
+ PositionImpl toPosition =
position.getPositionAfterEntries(skippedEntryNum);
+ while (!isValidPosition(toPosition)) {
+ Long nextLedgerId = ledgers.ceilingKey(toPosition.getLedgerId() +
1);
+ if (nextLedgerId == null) {
+ throw new NullPointerException();
Review Comment:
Throwing NPE is bad practice.
Please throw a new checked exception.
This way we have full control over what we are catching
##########
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/OpReadEntry.java:
##########
@@ -100,8 +100,8 @@ public void readEntriesFailed(ManagedLedgerException
exception, Object ctx) {
} else if (cursor.config.isAutoSkipNonRecoverableData() && exception
instanceof NonRecoverableLedgerException) {
log.warn("[{}][{}] read failed from ledger at position:{} : {}",
cursor.ledger.getName(), cursor.getName(),
readPosition, exception.getMessage());
- // try to find and move to next valid ledger
- final Position nexReadPosition =
cursor.getNextLedgerPosition(readPosition.getLedgerId());
Review Comment:
Why are you dropping 'final' ?
##########
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerImpl.java:
##########
@@ -3445,6 +3445,32 @@ public PositionImpl getNextValidPosition(final
PositionImpl position) {
return next;
}
+ public PositionImpl getValidPositionAfterSkippedEntries(final PositionImpl
position, int skippedEntryNum) {
+ PositionImpl skippedPosition;
+ try {
+ skippedPosition = getValidPositionInternal(position,
skippedEntryNum);
+ } catch (NullPointerException e) {
Review Comment:
Catching NPE is always a bad practice in Java
Please verify the cause of the NPE and add a null check
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