ArafatKhan2198 commented on code in PR #9436:
URL: https://github.com/apache/ozone/pull/9436#discussion_r2597175553
##########
hadoop-ozone/recon/src/main/java/org/apache/hadoop/ozone/recon/spi/impl/OzoneManagerServiceProviderImpl.java:
##########
@@ -272,6 +272,7 @@ public void start() {
throw new RuntimeException(runtimeException);
}
}
+ reconTaskController.updateOMMetadataManager(omMetadataManager);
Review Comment:
I had actually gotten this error when I was trying to fix this problem with
a different fix -
This is the following code for ReconServer.java class of my earlier
iteration of fix where I kept the `start()` before Upgrade logic.
```
LOG.debug("Now starting all services of Recon...");
this.start();
this.isStarted = true;
LOG.info("Initializing support of Recon Features...");
FeatureProvider.initFeatureSupport(this.configuration);
LOG.info("Finalizing Layout Features.");
ReconSchemaVersionTableManager versionTableManager =
(ReconSchemaVersionTableManager)this.injector.getInstance(ReconSchemaVersionTableManager.class);
DataSource dataSource =
(DataSource)this.injector.getInstance(DataSource.class);
ReconLayoutVersionManager layoutVersionManager = new
ReconLayoutVersionManager(versionTableManager, reconContext, dataSource);
layoutVersionManager.finalizeLayoutFeatures();
LOG.info("Recon schema versioning completed.");
LOG.info("Recon server initialized successfully!");
```
I got the following error in the logs while trying to rebuild the NSSummary
tree -
```
2025-12-02 19:41:57,739 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: Feature
versioned 0 finalized successfully.
2025-12-02 19:41:57,751 INFO
[main]-org.apache.hadoop.ozone.recon.ReconSchemaVersionTableManager: Updated
schema version to '1'.
2025-12-02 19:41:57,751 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: MLV
updated to: 1
2025-12-02 19:41:57,753 INFO
[main]-org.apache.ozone.recon.schema.SqlDbUtils: RECON_TASK_STATUS table
already exists, skipping creation.
2025-12-02 19:41:57,754 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconTaskStatusTableUpgradeAction:
Adding 'last_task_run_status' column to task status table
2025-12-02 19:41:57,757 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconTaskStatusTableUpgradeAction:
Adding 'is_current_task_running' column to task status table
2025-12-02 19:41:57,765 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconTaskStatusTableUpgradeAction:
Updated 9 rows with default value for new columns
2025-12-02 19:41:57,779 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: Feature
versioned 1 finalized successfully.
2025-12-02 19:41:57,780 INFO
[main]-org.apache.hadoop.ozone.recon.ReconSchemaVersionTableManager: Updated
schema version to '2'.
2025-12-02 19:41:57,780 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: MLV
updated to: 2
2025-12-02 19:41:57,784 INFO
[main]-org.apache.ozone.recon.schema.SqlDbUtils: UNHEALTHY_CONTAINERS table
already exists, skipping creation.
2025-12-02 19:41:57,790 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.UnhealthyContainerReplicaMismatchAction:
Added the updated constraint to the UNHEALTHY_CONTAINERS table for enum state
values: [MISSING, EMPTY_MISSING, UNDER_REPLICATED, OVER_REPLICATED,
MIS_REPLICATED, ALL_REPLICAS_BAD, NEGATIVE_SIZE, REPLICA_MISMATCH]
2025-12-02 19:41:57,791 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: Feature
versioned 2 finalized successfully.
2025-12-02 19:41:57,792 INFO
[main]-org.apache.hadoop.ozone.recon.ReconSchemaVersionTableManager: Updated
schema version to '3'.
2025-12-02 19:41:57,792 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: MLV
updated to: 3
2025-12-02 19:41:57,792 INFO
[main]-org.apache.hadoop.ozone.recon.upgrade.NSSummaryAggregatedTotalsUpgrade:
Triggering asynchronous NSSummary tree rebuild for materialized totals (upgrade
action).
2025-12-02 19:41:57,792 INFO
[main]-org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl: Queueing
task reinitialization event due to: MANUAL_TRIGGER (retry attempt count: 0)
2025-12-02 19:41:57,792 INFO
[main]-org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl: Attempting
checkpoint creation (retry attempt: 1)
2025-12-02 19:41:57,794 ERROR
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: Failed
to finalize feature 3. Rolling back changes.
java.lang.NullPointerException: Cannot invoke
"org.apache.hadoop.ozone.recon.recovery.ReconOMMetadataManager.getStore()"
because "omMetaManager" is null
at
org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl.cleanTempCheckPointPath(ReconTaskControllerImpl.java:624)
at
org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl.createOMCheckpoint(ReconTaskControllerImpl.java:607)
at
org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl.queueReInitializationEvent(ReconTaskControllerImpl.java:503)
at
org.apache.hadoop.ozone.recon.upgrade.NSSummaryAggregatedTotalsUpgrade.execute(NSSummaryAggregatedTotalsUpgrade.java:54)
at
org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager.finalizeLayoutFeatures(ReconLayoutVersionManager.java:101)
at org.apache.hadoop.ozone.recon.ReconServer.call(ReconServer.java:177)
at org.apache.hadoop.ozone.recon.ReconServer.call(ReconServer.java:73)
at picocli.CommandLine.executeUserObject(CommandLine.java:2031)
at picocli.CommandLine.access$1500(CommandLine.java:148)
at
picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2469)
at picocli.CommandLine$RunLast.handle(CommandLine.java:2461)
at picocli.CommandLine$RunLast.handle(CommandLine.java:2423)
at
picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2277)
at picocli.CommandLine$RunLast.execute(CommandLine.java:2425)
at picocli.CommandLine.execute(CommandLine.java:2174)
at org.apache.hadoop.hdds.cli.GenericCli.execute(GenericCli.java:89)
at org.apache.hadoop.hdds.cli.GenericCli.run(GenericCli.java:80)
at org.apache.hadoop.ozone.recon.ReconServer.main(ReconServer.java:95)
2025-12-02 19:41:57,796 ERROR
[main]-org.apache.hadoop.ozone.recon.upgrade.ReconLayoutVersionManager: Failed
to finalize layout features: Cannot invoke
"org.apache.hadoop.ozone.recon.recovery.ReconOMMetadataManager.getStore()"
because "omMetaManager" is null
```
So after setting it explicitly from the setter I was able to fix this
problem of NULL pointer
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