[improve][broker] Improve cursor.getNumberOfEntries if isUnackedRangesOpenCacheSetEnabled=true #17465
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codelipenghui
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Technoboy-,
congbobo184,
eolivelli,
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lhotari,
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merlimat and
michaeljmarshall
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Nice optimization |
lhotari
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Sep 5, 2022
| public int cardinality(long lowerKey, long lowerValue, long upperKey, long upperValue) { | ||
| NavigableMap<Long, BitSet> subMap = rangeBitSetMap.subMap(lowerKey, true, upperKey, true); | ||
| MutableInt v = new MutableInt(0); | ||
| subMap.forEach((ledgerId, bitset) -> { |
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Since the class ConcurrentOpenLongPairRangeSet isn't specific to ledgers, would it make sense to avoid using ledgerId as the variable name?
lhotari
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Sep 5, 2022
pulsar-common/src/main/java/org/apache/pulsar/common/util/collections/LongPairRangeSet.java
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.../src/main/java/org/apache/pulsar/common/util/collections/ConcurrentOpenLongPairRangeSet.java
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@lhotari Thanks for the review. I have updated the PR according to your suggestions; please help take a look again. |
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…sOpenCacheSetEnabled=true (#17465)
codelipenghui
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@codelipenghui LGTM, great improvement in this PR. |
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Sep 16, 2022
…sOpenCacheSetEnabled=true (apache#17465) (cherry picked from commit 09edcce) (cherry picked from commit a88ac65)
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Fixes #17451
Motivation
Improve the
ManagedCursorImpl.getNumberOfEntries()ifisUnackedRangesOpenCacheSetEnabled=true.Since the
ConcurrentOpenLongPairRangeSethas the ability to get the acked count for each Ledger,the
ManagedCursorImplcan avoid iterating each range to calculate the acked count.Modifications
Make the
ConcurrentOpenLongPairRangeSetable to get acked count.Verifying this change
Unit test for the new method introduced in
ConcurrentOpenLongPairRangeSetThe
getNumberOfEntries()change is already covered by the existing testDocumentation
Check the box below or label this PR directly.
Need to update docs?
doc-not-needed(Just an improvement for the presented implementation)