[core] Support delete stats in result of scan plan. #4506
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@JingsongLi Hi，Please CC, Thx. |
JingsongLi
requested changes
Nov 18, 2024
| valueStatsCols); | ||
| } | ||
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| public DataFileMeta withoutStats() { |
| rowCount, | ||
| minKey, | ||
| maxKey, | ||
| EMPTY_STATS, |
Contributor
There was a problem hiding this comment.
It is better to keep key stats?
| deleteRowCount, | ||
| embeddedIndex, | ||
| fileSource, | ||
| valueStatsCols); |
| file.embeddedIndex()); | ||
| } | ||
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| public ManifestEntry withoutStats() { |
| } | ||
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| @Override | ||
| public FileStoreScan withoutStatsInPlan() { |
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| FileStoreScan withMetrics(ScanMetrics metrics); | ||
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| FileStoreScan withoutStatsInPlan(); |
| } | ||
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| @Override | ||
| public AbstractDataTableScan withoutStatsInPlan() { |
| return this; | ||
| } | ||
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| default InnerTableScan withoutStatsInPlan() { |
| ReadBuilder withShard(int indexOfThisSubtask, int numberOfParallelSubtasks); | ||
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| /** Delete stats in scan plan result. */ | ||
| ReadBuilder withoutStatsInPlan(); |
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Purpose
In my company's production environment, when use Flink session cluster for OLAP scan Paimon, we found the JobManager's memory is always heavy.
So, we will optimize this by two ways:
(1) Delete stats in DataSplit.
(2) When dataSkipping, cut unused stats in ManifestEntry.
This pr is for (1)
Linked issue: close #xxx
Tests
API and Format
Documentation