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Posted to gitbox@hive.apache.org by GitBox <gi...@apache.org> on 2021/09/06 12:37:41 UTC
[GitHub] [hive] deniskuzZ opened a new pull request #2619: HIVE-25502: Cleaner causes data loss when processing aborted txn with DP
deniskuzZ opened a new pull request #2619:
URL: https://github.com/apache/hive/pull/2619
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to resolve the data loss issue caused by Cleaner
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[GitHub] [hive] szlta commented on a change in pull request #2619: HIVE-25502: Cleaner causes data loss when processing aborted txn with DP
Posted by GitBox <gi...@apache.org>.
szlta commented on a change in pull request #2619:
URL: https://github.com/apache/hive/pull/2619#discussion_r703308035
##########
File path: standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/CompactionInfo.java
##########
@@ -277,6 +277,6 @@ public static CompactionInfo optionalCompactionInfoStructToInfo(OptionalCompacti
public void setWriteIds(Set<Long> writeIds) {
this.writeIds = writeIds;
- isSetWriteIds = true;
+ isSetWriteIds = !writeIds.isEmpty();
Review comment:
Why do we maintain 2 states for this anyway?
We could have a method instead:
public boolean isSetWriteIds() { return !writeIds.isEmpty(); }
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[GitHub] [hive] deniskuzZ merged pull request #2619: HIVE-25502: Cleaner causes data loss when processing aborted txn with DP
Posted by GitBox <gi...@apache.org>.
deniskuzZ merged pull request #2619:
URL: https://github.com/apache/hive/pull/2619
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[GitHub] [hive] szlta commented on a change in pull request #2619: HIVE-25502: Cleaner causes data loss when processing aborted txn with DP
Posted by GitBox <gi...@apache.org>.
szlta commented on a change in pull request #2619:
URL: https://github.com/apache/hive/pull/2619#discussion_r703304664
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Cleaner.java
##########
@@ -321,6 +321,9 @@ private boolean removeFiles(String location, ValidWriteIdList writeIdList, Compa
ci.setWriteIds(dir.getAbortedWriteIds());
}
obsoleteDirs.addAll(dir.getAbortedDirectories());
+ if (isDynPartAbort(table, ci)) {
+ obsoleteDirs = dir.getAbortedDirectories();
Review comment:
Could we add a small explanation comment here why obsoleteDirs has to be overwritten for isDynPartAbort case?
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[GitHub] [hive] deniskuzZ commented on pull request #2619: HIVE-25502: Cleaner causes data loss when processing aborted txn with DP
Posted by GitBox <gi...@apache.org>.
deniskuzZ commented on pull request #2619:
URL: https://github.com/apache/hive/pull/2619#issuecomment-914562960
recheck
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[GitHub] [hive] klcopp commented on a change in pull request #2619: HIVE-25502: Cleaner causes data loss when processing aborted txn with DP
Posted by GitBox <gi...@apache.org>.
klcopp commented on a change in pull request #2619:
URL: https://github.com/apache/hive/pull/2619#discussion_r703271355
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Cleaner.java
##########
@@ -334,7 +337,7 @@ private boolean removeFiles(String location, ValidWriteIdList writeIdList, Compa
extraDebugInfo.setCharAt(extraDebugInfo.length() - 1, ']');
LOG.info(idWatermark(ci) + " About to remove " + filesToDelete.size() +
" obsolete directories from " + location + ". " + extraDebugInfo.toString());
- if (filesToDelete.size() < 1) {
+ if (filesToDelete.size() < 1 && !isDynPartAbort(table, ci)) {
Review comment:
Do we trust that the min write id is high enough that all aborted directories will be cleared?
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