[
https://issues.apache.org/jira/browse/HIVE-23671?focusedWorklogId=452425&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-452425
]
ASF GitHub Bot logged work on HIVE-23671:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Jun/20 15:05
Start Date: 29/Jun/20 15:05
Worklog Time Spent: 10m
Work Description: deniskuzZ commented on a change in pull request #1087:
URL: https://github.com/apache/hive/pull/1087#discussion_r447042125
##########
File path:
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/Msck.java
##########
@@ -229,102 +239,168 @@ public int repair(MsckInfo msckInfo) {
throw new MetastoreException(e);
}
}
+ if (transactionalTable && !MetaStoreServerUtils.isPartitioned(table)) {
+ if (result.getMaxWriteId() > 0) {
+ if (txnId < 0) {
+ // We need the txnId to check against even if we didn't do the
locking
+ txnId = getMsc().openTxn(getUserName());
+ }
+
+ validateAndAddMaxTxnIdAndWriteId(result.getMaxWriteId(),
result.getMaxTxnId(),
+ table.getDbName(), table.getTableName(), txnId);
+ }
+ }
}
success = true;
} catch (Exception e) {
LOG.warn("Failed to run metacheck: ", e);
success = false;
- ret = 1;
} finally {
- if (msckInfo.getResFile() != null) {
- BufferedWriter resultOut = null;
- try {
- Path resFile = new Path(msckInfo.getResFile());
- FileSystem fs = resFile.getFileSystem(getConf());
- resultOut = new BufferedWriter(new
OutputStreamWriter(fs.create(resFile)));
-
- boolean firstWritten = false;
- firstWritten |= writeMsckResult(result.getTablesNotInMs(),
- "Tables not in metastore:", resultOut, firstWritten);
- firstWritten |= writeMsckResult(result.getTablesNotOnFs(),
- "Tables missing on filesystem:", resultOut, firstWritten);
- firstWritten |= writeMsckResult(result.getPartitionsNotInMs(),
- "Partitions not in metastore:", resultOut, firstWritten);
- firstWritten |= writeMsckResult(result.getPartitionsNotOnFs(),
- "Partitions missing from filesystem:", resultOut, firstWritten);
- firstWritten |= writeMsckResult(result.getExpiredPartitions(),
- "Expired partitions (retention period: " + partitionExpirySeconds
+ "s) :", resultOut, firstWritten);
- // sorting to stabilize qfile output (msck_repair_drop.q)
- Collections.sort(repairOutput);
- for (String rout : repairOutput) {
- if (firstWritten) {
- resultOut.write(terminator);
- } else {
- firstWritten = true;
- }
- resultOut.write(rout);
- }
- } catch (IOException e) {
- LOG.warn("Failed to save metacheck output: ", e);
- ret = 1;
- } finally {
- if (resultOut != null) {
- try {
- resultOut.close();
- } catch (IOException e) {
- LOG.warn("Failed to close output file: ", e);
- ret = 1;
- }
- }
+ if (result!=null) {
+ logResult(result);
+ if (msckInfo.getResFile() != null) {
+ success = writeResultToFile(msckInfo, result, repairOutput,
partitionExpirySeconds) && success;
}
}
- LOG.info("Tables not in metastore: {}", result.getTablesNotInMs());
- LOG.info("Tables missing on filesystem: {}", result.getTablesNotOnFs());
- LOG.info("Partitions not in metastore: {}",
result.getPartitionsNotInMs());
- LOG.info("Partitions missing from filesystem: {}",
result.getPartitionsNotOnFs());
- LOG.info("Expired partitions: {}", result.getExpiredPartitions());
- if (acquireLock && txnId > 0) {
- if (success) {
- try {
- LOG.info("txnId: {} succeeded. Committing..", txnId);
- getMsc().commitTxn(txnId);
- } catch (Exception e) {
- LOG.warn("Error while committing txnId: {} for table: {}",
txnId, qualifiedTableName, e);
- ret = 1;
- }
- } else {
- try {
- LOG.info("txnId: {} failed. Aborting..", txnId);
- getMsc().abortTxns(Lists.newArrayList(txnId));
- } catch (Exception e) {
- LOG.warn("Error while aborting txnId: {} for table: {}", txnId,
qualifiedTableName, e);
- ret = 1;
- }
- }
+ if (txnId > 0) {
+ success = closeTxn(qualifiedTableName, success, txnId) && success;
Review comment:
same success &= closeTxn(qualifiedTableName, success, txnId)
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Issue Time Tracking
-------------------
Worklog Id: (was: 452425)
Time Spent: 3.5h (was: 3h 20m)
> MSCK repair should handle transactional tables in certain usecases
> ------------------------------------------------------------------
>
> Key: HIVE-23671
> URL: https://issues.apache.org/jira/browse/HIVE-23671
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Peter Varga
> Assignee: Peter Varga
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> The MSCK REPAIR tool does not handle transactional tables too well. It can
> find and add new partitions the same way as for non-transactional tables, but
> since the writeId differences are not handled, the data can not read back
> from the new partitions.
> We could handle some usecases when the writeIds in the HMS and the underlying
> data are not conflicting. If the HMS does not contains allocated writes for
> the table we can seed the table with the writeIds read from the directory
> structrure.
> Real life use cases could be:
> * Copy data files from one cluster to another with different HMS, create the
> table and call MSCK REPAIR
> * If the HMS db is lost, recreate the table and call MSCK REPAIR
>
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