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https://issues.apache.org/jira/browse/HIVE-25397?focusedWorklogId=687834&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-687834
]
ASF GitHub Bot logged work on HIVE-25397:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Nov/21 08:17
Start Date: 30/Nov/21 08:17
Worklog Time Spent: 10m
Work Description: ArkoSharma commented on a change in pull request #2539:
URL: https://github.com/apache/hive/pull/2539#discussion_r759026652
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplDumpTask.java
##########
@@ -1105,17 +1105,15 @@ Long bootStrapDump(Path dumpRoot, DumpMetaData dmd,
Path cmRoot, Hive hiveDb)
boolean isExternalTablePresent = false;
String snapshotPrefix = dbName.toLowerCase();
- ArrayList<String> prevSnaps = new ArrayList<>(); // Will stay empty
in case of bootstrap
+ ArrayList<String> prevSnaps = new ArrayList<>();
if (isSnapshotEnabled) {
- // Delete any old existing snapshot file, We always start fresh in
case of bootstrap.
FileUtils.deleteIfExists(getDFS(SnapshotUtils.getSnapshotFileListPath(dumpRoot),
conf),
- new Path(SnapshotUtils.getSnapshotFileListPath(dumpRoot),
- EximUtil.FILE_LIST_EXTERNAL_SNAPSHOT_CURRENT));
-
FileUtils.deleteIfExists(getDFS(SnapshotUtils.getSnapshotFileListPath(dumpRoot),
conf),
Review comment:
made the change.
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/DirCopyTask.java
##########
@@ -254,23 +256,55 @@ public boolean canExecuteInParallel() {
return true;
}
- boolean copyUsingDistCpSnapshots(Path sourcePath, Path targetPath,
UserGroupInformation proxyUser,
+ boolean copyUsingDistCpSnapshots(Path sourcePath, Path targetPath,
UserGroupInformation proxyUser, boolean isBootstrap,
HiveConf clonedConf) throws IOException {
DistributedFileSystem targetFs = SnapshotUtils.getDFS(targetPath,
clonedConf);
boolean result = false;
+ String snapPrefix = work.getSnapshotPrefix();
+ if(isBootstrap && conf.getBoolVar(HiveConf.ConfVars.REPL_REUSE_SNAPSHOTS))
{
+ // in case of bootstrap replication from B to A (reverse replication),
rename snapshots in A
+ // as they might have been renamed during dump in B
+ FileStatus[] listing = targetFs.listStatus(new Path(targetPath,
".snapshot"));
+ for (FileStatus elem : listing) {
+ String snapShotName = elem.getPath().getName();
+ String prefix;
+ if (snapShotName.contains(OLD_SNAPSHOT)) {
+ prefix = snapShotName.substring(0,
snapShotName.lastIndexOf(OLD_SNAPSHOT));
+ if (!prefix.equals(snapPrefix)) {
+ targetFs.renameSnapshot(targetPath, firstSnapshot(prefix),
firstSnapshot(snapPrefix));
+ }
+ }
+ if (snapShotName.contains(NEW_SNAPSHOT)) {
+ prefix = snapShotName.substring(0,
snapShotName.lastIndexOf(NEW_SNAPSHOT));
+ if (!prefix.equals(snapPrefix)) {
+ targetFs.renameSnapshot(targetPath, secondSnapshot(prefix),
secondSnapshot(snapPrefix));
+ }
+ }
+ }
Review comment:
done.
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Issue Time Tracking
-------------------
Worklog Id: (was: 687834)
Time Spent: 4h 20m (was: 4h 10m)
> Snapshot support for controlled failover
> ----------------------------------------
>
> Key: HIVE-25397
> URL: https://issues.apache.org/jira/browse/HIVE-25397
> Project: Hive
> Issue Type: Bug
> Reporter: Arko Sharma
> Assignee: Arko Sharma
> Priority: Major
> Labels: pull-request-available
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> In case the same locations are used for external tables on the source and
> target, then the snapshots created during replication can be re-used during
> reverse replication. This patch enables re-using the snapshots during
> reverse replication using a configuration.
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