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Fix NoSuchElementException when rereplicate empty ledgers #4039

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merged 4 commits into from
Sep 20, 2023

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chenhongSZ
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@chenhongSZ chenhongSZ commented Jul 27, 2023

Motivation

Master issue: #4036

Changes

Set the numberOfEntriesToReplicate to 0 when ledger is empty

@aloyszhang
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@hangc0276 @zymap PTAL

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@hangc0276 hangc0276 left a comment

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Nice catch. @chenhongSZ Would you please add a test to cover this change? thanks.

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chenhongSZ commented Aug 13, 2023

Nice catch. @chenhongSZ Would you please add a test to cover this change? thanks.

done, PTAL

Comment on lines 296 to 298
long numberOfEntriesToReplicate = firstEntryId == INVALID_ENTRY_ID && lastEntryId == INVALID_ENTRY_ID ? 0 :
(lastEntryId - firstEntryId) + 1;
long splitsWithFullEntries = numberOfEntriesToReplicate
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Can you share the configuration of replicationEntryBatchSize in the bookie server?
If I understand correctly, this problem will only occur when replicationEntryBatchSize=1

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Your understanding is correct. Our configuration is rereplicationEntryBatchSize=1

@@ -293,7 +293,8 @@ static Set<LedgerFragment> splitIntoSubFragments(LedgerHandle lh,
assert false;
}

long numberOfEntriesToReplicate = (lastEntryId - firstEntryId) + 1;
long numberOfEntriesToReplicate = firstEntryId == INVALID_ENTRY_ID && lastEntryId == INVALID_ENTRY_ID ? 0 :
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We can simplify the condition to long numberOfEntriesToReplicate = firstEntryId == INVALID_ENTRY_ID ? 0 : (lastEntryId - firstEntryId) + 1;

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done, PTAL

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LGTM

@hangc0276 hangc0276 merged commit 95320f4 into apache:master Sep 20, 2023
25 of 26 checks passed
zymap pushed a commit that referenced this pull request Dec 7, 2023
### Motivation
Master issue: #4036

### Changes
Set the `numberOfEntriesToReplicate` to 0 when ledger is empty

(cherry picked from commit 95320f4)
hangc0276 pushed a commit to hangc0276/bookkeeper that referenced this pull request Jan 18, 2024
### Motivation
Master issue: apache#4036

### Changes
Set the `numberOfEntriesToReplicate` to 0 when ledger is empty

(cherry picked from commit 95320f4)
Ghatage pushed a commit to sijie/bookkeeper that referenced this pull request Jul 12, 2024
### Motivation
Master issue: apache#4036 

### Changes
Set the `numberOfEntriesToReplicate` to 0 when ledger is empty
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5 participants