[HADOOP-9119] Add test to FileSystemContractBaseTest to verify integrity of overwritten files - ASF JIRA

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Details

Type: Test
Status: Closed
Priority: Minor
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.0.3-alpha
Component/s: fs, test
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Patches adds more tests to verify overwritten and more complex operations -write-delete-overwrite. By using differently sized datasets and different data inside, these tests verify that the overwrite really did take place. While HDFS meets all these requirements directly, eventually consistent object stores may not -hence these tests.

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Patches adds more tests to verify overwritten and more complex operations -write-delete-overwrite. By using differently sized datasets and different data inside, these tests verify that the overwrite really did take place. While HDFS meets all these requirements directly, eventually consistent object stores may not -hence these tests.

Description

The test FileSystemContractBaseTest.testOverwrite() is meant to verify that overwrites work -but it only overwrites a zero byte file with some data and only checks for length. This can hide problems where there overwrite was somehow corrupted.