HBASE-28328 Add an option to count different types of Delete Markers in RowCounter

[shubham-roy]

A flag is introduced, which, when enabled, allows RowCounter to count the various types of Delete Markers - DELETE_COLUMN, DELETE_FAMILY, DELETE_FAMILY_VERSION. It will also calculate the number of rows having a delete marker.

To enable this the scan object was modified -> if flag is set, raw scan is performed without FirstKeyOnlyFilter.

[NihalJain]

BTW thanks @shubham-roy for your first PR in Apache HBase, I have added some review comments, please have a look and please let me know if you have any doubts or need any help!

[NihalJain]

this doesnot look necessary, we have been validating counters with following logic for existing tests. Please update tests to take a similar approach:

   * Run the RowCounter map reduce job and verify the row count.
   * @param args          the command line arguments to be used for rowcounter job.
   * @param expectedCount the expected row count (result of map reduce job).
   * @throws Exception in case of any unexpected error.
   */
  private void runCreateSubmittableJobWithArgs(String[] args, int expectedCount) throws Exception {
    Job job = RowCounter.createSubmittableJob(TEST_UTIL.getConfiguration(), args);
    long start = EnvironmentEdgeManager.currentTime();
    job.waitForCompletion(true);
    long duration = EnvironmentEdgeManager.currentTime() - start;
    LOG.debug("row count duration (ms): " + duration);
    assertTrue(job.isSuccessful());
    Counter counter = job.getCounters().findCounter(RowCounter.RowCounterMapper.Counters.ROWS);
    assertEquals(expectedCount, counter.getValue());
  }

[shubham-roy]

@NihalJain, the method runCreateSubmittableJobWithArgs internally calls RowCounter.createSubmittableJob(TEST_UTIL.getConfiguration(), args). However, the method createSubmittableJob is marked for deprecation - code link. So ideally, I believe (please correct me if I am wrong), we should not be making a change to that method. To use that method, we have to change the scan behaviour based on the flag.

[NihalJain]

Hey @shubham-roy I mean we could rewriten a helper in tests similar to above example method runCreateSubmittableJobWithArgs and make assertions. IMO we should try to get rid of deprecated API as another task than mixing implementations and doing same thing in different ways at different places.

[shubham-roy]

IMO we should try to get rid of deprecated API as another task than mixing implementations and doing same thing in different ways at different places.

@NihalJain , don't you think that the access to the job object via a getter method (which I exposed) could be a good starting point to getting rid of the deprecated method createSubmittableJob. I already used it in a way that could be easily extended to other use cases as well. LMK what do you think.

[NihalJain]

Sure but I would prefer to do that as another cleanup task for separation of concerns

[shubham-roy]

Sure but I would prefer to do that as another cleanup task for separation of concerns

@NihalJain , I agree and I am also not touching any of the other tests. I just used whatever is needed for my testing in an extensible way. Fixing of remaining tests can be taken up as a separate cleanup task.

[NihalJain]

will leave this upto others as i am still not convinced. +0 from me.

[shubham-roy]

@virajjasani , can you please have a look at this thread and let us know of your thoughts on the same?

[virajjasani]

@NihalJain A gentle reminder whenever you are ready to take another look!

[NihalJain]

will leave this upto others as i am still not convinced. +0 from me.

[NihalJain]

Thanks for addressing the review comments @shubham-roy. LGTM !

Before merge, please ensure to keep jira and github PR title in sync. Also please add release notes in jira to explain the behaviour of the new flag and how to make use of it.

Thanks for this nice feature.

[shubham-roy]

Thank you @NihalJain for all the review!

[virajjasani]

I think we are good to merge the PR then?
@shubham-roy could you also create a PR against branch-2?

[shubham-roy]

I think we are good to merge the PR then?
@shubham-roy could you also create a PR against branch-2?

@virajjasani , yes the PR is good to merge.
PR against branch-2: #6496

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 25s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	hbaseanti	0m 0s		Patch does not have any anti-patterns.
			_ master Compile Tests _
+1 💚	mvninstall	3m 51s		master passed
+1 💚	compile	0m 41s		master passed
+1 💚	checkstyle	0m 13s		master passed
+1 💚	spotbugs	0m 39s		master passed
+1 💚	spotless	0m 50s		branch has no errors when running spotless:check.
			_ Patch Compile Tests _
+1 💚	mvninstall	3m 16s		the patch passed
+1 💚	compile	0m 37s		the patch passed
+1 💚	javac	0m 37s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 12s		the patch passed
+1 💚	xmllint	0m 0s		No new issues.
+1 💚	spotbugs	0m 42s		the patch passed
+1 💚	hadoopcheck	11m 52s		Patch does not cause any errors with Hadoop 3.3.6 3.4.0.
+1 💚	spotless	0m 46s		patch has no errors when running spotless:check.
			_ Other Tests _
+1 💚	asflicense	0m 10s		The patch does not generate ASF License warnings.
		31m 34s

Subsystem	Report/Notes
Docker	ClientAPI=1.43 ServerAPI=1.43 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-6435/10/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#6435
Optional Tests	dupname asflicense javac codespell detsecrets xmllint hadoopcheck spotless compile spotbugs checkstyle hbaseanti
uname	Linux f8c49ce6d4ba 5.4.0-1103-aws #111~18.04.1-Ubuntu SMP Tue May 23 20:04:10 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / f4a1b12
Default Java	Eclipse Adoptium-17.0.11+9
Max. process+thread count	85 (vs. ulimit of 30000)
modules	C: hbase-mapreduce U: hbase-mapreduce
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-6435/10/console
versions	git=2.34.1 maven=3.9.8 spotbugs=4.7.3 xmllint=20913
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 43s		Docker mode activated.
-0 ⚠️	yetus	0m 3s		Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --author-ignore-list --blanks-eol-ignore-file --blanks-tabs-ignore-file --quick-hadoopcheck
			_ Prechecks _
			_ master Compile Tests _
+1 💚	mvninstall	2m 58s		master passed
+1 💚	compile	0m 22s		master passed
+1 💚	javadoc	0m 16s		master passed
+1 💚	shadedjars	5m 21s		branch has no errors when building our shaded downstream artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	2m 52s		the patch passed
+1 💚	compile	0m 22s		the patch passed
+1 💚	javac	0m 22s		the patch passed
+1 💚	javadoc	0m 16s		the patch passed
+1 💚	shadedjars	5m 21s		patch has no errors when building our shaded downstream artifacts.
			_ Other Tests _
+1 💚	unit	19m 11s		hbase-mapreduce in the patch passed.
		38m 53s

Subsystem	Report/Notes
Docker	ClientAPI=1.47 ServerAPI=1.47 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-6435/10/artifact/yetus-jdk17-hadoop3-check/output/Dockerfile
GITHUB PR	#6435
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux b4e5c4e278bf 5.4.0-195-generic #215-Ubuntu SMP Fri Aug 2 18:28:05 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / f4a1b12
Default Java	Eclipse Adoptium-17.0.11+9
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-6435/10/testReport/
Max. process+thread count	2416 (vs. ulimit of 30000)
modules	C: hbase-mapreduce U: hbase-mapreduce
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-6435/10/console
versions	git=2.34.1 maven=3.9.8
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