BsoBird commented on code in PR #9546:
URL: https://github.com/apache/iceberg/pull/9546#discussion_r1481762541
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core/src/main/java/org/apache/iceberg/hadoop/HadoopTableOperations.java:
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@@ -289,64 +377,153 @@ Path versionHintFile() {
return metadataPath(Util.VERSION_HINT_FILENAME);
}
- private void writeVersionHint(int versionToWrite) {
+ @VisibleForTesting
+ boolean writeVersionHint(FileSystem fs, Integer versionToWrite) throws
Exception {
Path versionHintFile = versionHintFile();
- FileSystem fs = getFileSystem(versionHintFile, conf);
-
+ Path tempVersionHintFile = metadataPath(UUID.randomUUID() +
"-version-hint.temp");
try {
- Path tempVersionHintFile = metadataPath(UUID.randomUUID().toString() +
"-version-hint.temp");
writeVersionToPath(fs, tempVersionHintFile, versionToWrite);
- fs.delete(versionHintFile, false /* recursive delete */);
- fs.rename(tempVersionHintFile, versionHintFile);
- } catch (IOException e) {
- LOG.warn("Failed to update version hint", e);
+ // We can accept that version Hint fails to write, but we can't accept
that version Hint
+ // writes the wrong version.
+ if (fs.exists(versionHintFile) || findVersionWithOutVersionHint(fs) !=
versionToWrite) {
+ throw new AlreadyExistsException(
Review Comment:
Here, as expected, versionHintFile should not appear. If it does, it means
that another client is operating. Then we should stop everything.
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