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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/04/01 04:29:13 UTC

[GitHub] [flink-table-store] JingsongLi opened a new pull request #70: [FLINK-26971] UniversalCompaction should pick by size ratio after picking by file num

JingsongLi opened a new pull request #70:
URL: https://github.com/apache/flink-table-store/pull/70


   This way we can avoid the problem of oversized first files
   
   


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[GitHub] [flink-table-store] tsreaper commented on a change in pull request #70: [FLINK-26971] UniversalCompaction should pick by size ratio after picking by file num

Posted by GitBox <gi...@apache.org>.
tsreaper commented on a change in pull request #70:
URL: https://github.com/apache/flink-table-store/pull/70#discussion_r840435301



##########
File path: flink-table-store-core/src/main/java/org/apache/flink/table/store/file/mergetree/compact/UniversalCompaction.java
##########
@@ -63,7 +63,8 @@ public UniversalCompaction(int maxSizeAmp, int sizeRatio, int maxRunNum) {
         // 3 checking for file num
         if (runs.size() > maxRunNum) {

Review comment:
       Sorry for misleading. They're actually the same option.




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[GitHub] [flink-table-store] tsreaper commented on a change in pull request #70: [FLINK-26971] UniversalCompaction should pick by size ratio after picking by file num

Posted by GitBox <gi...@apache.org>.
tsreaper commented on a change in pull request #70:
URL: https://github.com/apache/flink-table-store/pull/70#discussion_r840271261



##########
File path: flink-table-store-core/src/main/java/org/apache/flink/table/store/file/mergetree/compact/UniversalCompaction.java
##########
@@ -63,7 +63,8 @@ public UniversalCompaction(int maxSizeAmp, int sizeRatio, int maxRunNum) {
         // 3 checking for file num
         if (runs.size() > maxRunNum) {

Review comment:
       Trigger number for this compaction and other compactions should be different (see [rocksdb wiki](https://github.com/facebook/rocksdb/wiki/Universal-Compaction#4-compaction-triggered-by-number-of-sorted-runs-without-respecting-size_ratio)). Add a new option.




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[GitHub] [flink-table-store] JingsongLi merged pull request #70: [FLINK-26971] UniversalCompaction should pick by size ratio after picking by file num

Posted by GitBox <gi...@apache.org>.
JingsongLi merged pull request #70:
URL: https://github.com/apache/flink-table-store/pull/70


   


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