bgaborg commented on a change in pull request #951: HADOOP-15183. S3Guard store
becomes inconsistent after partial failure of rename
URL: https://github.com/apache/hadoop/pull/951#discussion_r292955268
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File path:
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java
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@@ -1225,130 +1302,292 @@ private boolean innerRename(Path source, Path dest)
}
}
- // If we have a MetadataStore, track deletions/creations.
- Collection<Path> srcPaths = null;
- List<PathMetadata> dstMetas = null;
- if (hasMetadataStore()) {
- srcPaths = new HashSet<>(); // srcPaths need fast look up before put
- dstMetas = new ArrayList<>();
- }
- // TODO S3Guard HADOOP-13761: retries when source paths are not visible yet
+ // Validation completed: time to begin the operation.
Review comment:
Maybe it would worth to create a separate method to the validation and all
the other parts of this method that could be moved and tested separately from
innerRename. This method is huge, 300+ lines; it would help the sustainability
to split it up.
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