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https://issues.apache.org/jira/browse/HDDS-1339?focusedWorklogId=220178&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-220178
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ASF GitHub Bot logged work on HDDS-1339:
----------------------------------------
Author: ASF GitHub Bot
Created on: 28/Mar/19 17:48
Start Date: 28/Mar/19 17:48
Worklog Time Spent: 10m
Work Description: bharatviswa504 commented on pull request #651:
HDDS-1339. Implement ratis snapshots on OM
URL: https://github.com/apache/hadoop/pull/651#discussion_r270122895
##########
File path:
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/ratis/OzoneManagerStateMachine.java
##########
@@ -308,56 +357,35 @@ private IOException constructExceptionForFailedRequest(
STATUS_CODE + omResponse.getStatus());
}
- /*
- * Apply a committed log entry to the state machine.
- */
- @Override
- public CompletableFuture<Message> applyTransaction(TransactionContext trx) {
- try {
- OMRequest request = OMRatisHelper.convertByteStringToOMRequest(
- trx.getStateMachineLogEntry().getLogData());
- CompletableFuture<Message> future = CompletableFuture
- .supplyAsync(() -> runCommand(request));
- return future;
- } catch (IOException e) {
- return completeExceptionally(e);
- }
- }
-
/**
- * Query the state machine. The request must be read-only.
+ * Submits write request to OM and returns the response Message.
+ * @param request OMRequest
+ * @return response from OM
+ * @throws ServiceException
*/
- @Override
- public CompletableFuture<Message> query(Message request) {
- try {
- OMRequest omRequest = OMRatisHelper.convertByteStringToOMRequest(
- request.getContent());
- return CompletableFuture.completedFuture(runCommand(omRequest));
- } catch (IOException e) {
- return completeExceptionally(e);
+ private Message runCommand(OMRequest request, long trxLogIndex) {
+ OMResponse response = handler.handle(request);
+ if (response.getSuccess()) {
Review comment:
Why we have checked getSuccess here, then considered that as
lastAppliedIndex.
As when there are cases like bucket creation failed for an already existing
bucket, the success will be set false. But that transaction request is
successfully completed. This one also should be considered as applied only
right?(Even though it does not mutate om DB, but the transaction request has
been completed)
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Issue Time Tracking
-------------------
Worklog Id: (was: 220178)
> Implement Ratis Snapshots on OM
> -------------------------------
>
> Key: HDDS-1339
> URL: https://issues.apache.org/jira/browse/HDDS-1339
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> For bootstrapping and restarting OMs, we need to implement snapshots in OM.
> The OM state maintained by RocksDB will be checkpoint-ed on demand. Ratis
> snapshots will only preserve the last applied log index by the State Machine
> on disk. This index will be stored in file in the OM metadata dir.
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