MINOR: Move Timer/TimingWheel to server-common

[dajac]

This patch rewrite Timer and the related classes in Java and moves them to server-common module. It is basically a one to one rewrite of the Scala code. Note that MockTimer is not moved as part of this patch. It will be done separately.

Committer Checklist (excluded from commit message)

• Verify design and implementation
• Verify test coverage and CI build status
• Verify documentation (including upgrade notes)

[dajac]

@divijvaidya As you started reviewing it, are you interested in finishing the review? That would unblock me.

[divijvaidya]

Hi @dajac , yes let me take a look first thing tomorrow.

[divijvaidya]

Reviewed the non test files so far. Leaving early feedback while I look at the test files.

[divijvaidya]

Test files look good. One minor comment.

[dajac]

@divijvaidya Thanks for your review. I have addressed all your comments.

[divijvaidya]

Looks good to me! The code is consistent with the scala implementation. I haven't reviewed for logical bugs but that is out of scope of this PR.

(waiting for CI test run to complete before approving)

[dajac]

Failed tests seem unrelated:

Build / JDK 11 and Scala 2.13 / testReplication() – org.apache.kafka.connect.mirror.integration.IdentityReplicationIntegrationTest
1m 45s
Build / JDK 11 and Scala 2.13 / testOffsetTranslationBehindReplicationFlow() – org.apache.kafka.connect.mirror.integration.MirrorConnectorsIntegrationBaseTest
1m 2s
Build / JDK 11 and Scala 2.13 / testRestartReplication() – org.apache.kafka.connect.mirror.integration.MirrorConnectorsIntegrationExactlyOnceTest
3m 8s
Build / JDK 11 and Scala 2.13 / testReplicateSourceDefault() – org.apache.kafka.connect.mirror.integration.MirrorConnectorsIntegrationSSLTest
1m 29s
Build / JDK 11 and Scala 2.13 / testDescribeAtMinIsrPartitions(String).quorum=zk – kafka.admin.TopicCommandIntegrationTest
6s
Build / JDK 11 and Scala 2.13 / [1] Type=ZK, Name=testNewAndChangedTopicsInDualWrite, MetadataVersion=3.4-IV0, Security=PLAINTEXT – kafka.zk.ZkMigrationIntegrationTest
14s
Build / JDK 8 and Scala 2.12 / testBumpTransactionalEpoch(String).quorum=kraft – kafka.api.TransactionsTest
1m 20s
Build / JDK 8 and Scala 2.12 / [1] Type=ZK, Name=testNewAndChangedTopicsInDualWrite, MetadataVersion=3.4-IV0, Security=PLAINTEXT – kafka.zk.ZkMigrationIntegrationTest
15s
Build / JDK 17 and Scala 2.13 / testBalancePartitionLeaders() – org.apache.kafka.controller.QuorumControllerTest
13s
Build / JDK 17 and Scala 2.13 / shouldWriteLatestOffsetsToCheckpointOnShutdown[exactly_once_v2] – org.apache.kafka.streams.integration.EosIntegrationTest