dlmarion commented on PR #5807:
URL: https://github.com/apache/accumulo/pull/5807#issuecomment-3197311325
In a standard 2.1 instance the root and metadata tables are configured with
the compaction services `root` and `meta`, respectively. In the default 4.0
configuration only the `default` compaction service is configured leading to
the root and metadata table not compacting until the configuration is fixed.
This change adds code to the UpgradeUtil class such that the `--start` option
will fail if any of the tables are configured with compaction services that
don't exist.
The output on a failure looks like:
```
2025-08-18T13:38:07,243 [util.UpgradeUtil] INFO : Defined compaction service
ids: [default]
2025-08-18T13:38:07,253 [util.UpgradeUtil] INFO : Table root is configured
to use service root for compaction kind SYSTEM
2025-08-18T13:38:07,253 [util.UpgradeUtil] ERROR: Table +r returned
non-existent compaction service root for compaction type SYSTEM.
2025-08-18T13:38:07,253 [util.UpgradeUtil] INFO : Table root is configured
to use service root for compaction kind USER
2025-08-18T13:38:07,254 [util.UpgradeUtil] ERROR: Table +r returned
non-existent compaction service root for compaction type USER.
2025-08-18T13:38:07,256 [util.UpgradeUtil] INFO : Table metadata is
configured to use service meta for compaction kind SYSTEM
2025-08-18T13:38:07,256 [util.UpgradeUtil] ERROR: Table !0 returned
non-existent compaction service meta for compaction type SYSTEM.
2025-08-18T13:38:07,256 [util.UpgradeUtil] INFO : Table metadata is
configured to use service meta for compaction kind USER
2025-08-18T13:38:07,256 [util.UpgradeUtil] ERROR: Table !0 returned
non-existent compaction service meta for compaction type USER.
2025-08-18T13:38:07,257 [util.UpgradeUtil] INFO : Table replication is
configured to use service default for compaction kind SYSTEM
2025-08-18T13:38:07,257 [util.UpgradeUtil] INFO : Table replication is
configured to use service default for compaction kind USER
2025-08-18T13:38:07,257 [util.UpgradeUtil] ERROR: Compaction configuration
is incorrect. One or more tables is configured to use a compaction service that
does not exist in the configuration. Configured compaction services are:
[default]
Thread 'upgrade' died.
java.lang.IllegalStateException: Compaction configuration is not correct.
Continuing with upgrade will leave the instance in a state where no compactions
will start. Please fix the system configuration by defining the expected
compaction services in accumulo.properties and run --start again.
at
org.apache.accumulo.server.util.UpgradeUtil.validateCompactionServiceConfiguration(UpgradeUtil.java:400)
at
org.apache.accumulo.server.util.UpgradeUtil.start(UpgradeUtil.java:270)
at
org.apache.accumulo.server.util.UpgradeUtil.execute(UpgradeUtil.java:325)
at org.apache.accumulo.start.Main.lambda$execKeyword$0(Main.java:81)
at java.base/java.lang.Thread.run(Thread.java:840)
```
To resolve the issue I had to add the following to `accumulo.properties`:
```
compaction.service.root.planner=org.apache.accumulo.core.spi.compaction.RatioBasedCompactionPlanner
compaction.service.root.planner.opts.group=[{"group":"default"}]
compaction.service.meta.planner=org.apache.accumulo.core.spi.compaction.RatioBasedCompactionPlanner
compaction.service.meta.planner.opts.group=[{"group":"default"}]
```
I noticed that the javadoc for RatioBasedCompactionPlanner was missing
`.planner` in the name when specifying the options, so I fixed that too.
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