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https://issues.apache.org/jira/browse/ASTERIXDB-2379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Luo closed ASTERIXDB-2379.
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Resolution: Not A Problem
> Inconsistent naming for LSM Component timestamps
> ------------------------------------------------
>
> Key: ASTERIXDB-2379
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2379
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: STO - Storage
> Reporter: Chen Luo
> Priority: Major
>
> The current naming of LSM components are inconsistent.
> AbstractLSMIndexFileManager.getComponentStartTime/getComponentEndTime assumes
> a component is named as "beginTS-endTS". However, physically a component is
> named as "endTS-beginTS". This leads to recovery problems because certain
> valid components could be erroneously deleted because of index checkpointing
> check.
> The problem is caused by merge operation. For example, in
> LSMBTree.getMergeFileReferences, firstComponent is actually newer than
> lastComponent, which breaks the assumption of time range.
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