HADOOP-17159 Ability for forceful relogin in UserGroupInformation class #2197

sguggilam · 2020-08-06T20:53:41Z

The commit was reverted and a new PR for this JIRA is posted as #2249

sguggilam · 2020-08-06T20:54:00Z

hadoop-yetus · 2020-08-07T00:27:15Z

💔 -1 overall

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steveloughran · 2020-08-07T14:04:35Z

LGTM, though I'll leave to someone who understands UGI to give the final vote

liuml07 · 2020-08-07T18:03:23Z

Thanks @steveloughran I added Arpit and kihwal as reviewers.

sguggilam · 2020-08-11T23:50:54Z

@arp7 @kihwal @xiaoyuyao Can you please review and provide your feedback ?

liuml07 · 2020-08-16T07:21:35Z

The patch looks good to me overall.

A question is: should we rename the word "force" with "ignoreTimeElapsed" to make it clear. If agreed on it includes updating the parameters name and Javadoc.

Thoughts? @sguggilam

I will give a final review next week.

sguggilam · 2020-08-17T18:55:11Z

Yes @liuml07 that makes sense, let me update the PR

liuml07

+1

I will commit by the end of this week if no more comments.

liuml07 · 2020-08-17T19:05:47Z

...mon-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java

nit: Fore you mean Force?

yes my bad, it's a typo, fixed it

hadoop-yetus · 2020-08-17T22:16:50Z

💔 -1 overall

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hadoop-yetus · 2020-08-17T22:28:59Z

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hadoop-yetus · 2020-08-25T02:12:03Z

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…ss (#2197) Contributed by Sandeep Guggilam. Signed-off-by: Mingliang Liu <[email protected]> Signed-off-by: Steve Loughran <[email protected]>

liuml07 · 2020-08-26T07:38:41Z

@sguggilam When I backport the code, I went through the code again. I think I found one bug. Before I revert the change, I want to confirm with you. The existing calls of reloginFromKeytab(false) or reloginFromKeytab(true), the parameter value false or true was previously for checkTGT. But with this change, they are for ignoreTimeElapsed. So the code calling the previously private method is broken - I found two places.

So, first we can change the new public API from

  public void reloginFromKeytab(boolean ignoreTimeElapsed) throws IOException {
    reloginFromKeytab(false, ignoreTimeElapsed);
  }

to something like:

  public void reloginFromKeytab(boolean checkTGT) throws IOException {
    reloginFromKeytab(checkTGT, true);
  }

Second, we should replace existing calls reloginFromKeytab(false) or reloginFromKeytab(true) in UGI to reloginFromKeytab(false, false) or reloginFromKeytab(true, false).

Could you explain more? Thanks!

sguggilam · 2020-08-26T17:12:29Z

@liuml07 Yes that's right. How about just adding the existing method reloginFromKeytab(boolean checkTGT) which would just call reloginFromKeytab(checkTGT,false). This way it retains all existing calls. Any new calls who want to force relogin irrespective of anything can just call reloginFromKeytab(ignoreTimeElapsed) which would also set checkTGT to false as the user want to force re-login anyways

Thoughts ?
I can send a quick follow up PR if this is fine

liuml07 · 2020-08-26T17:24:45Z

@sguggilam

We both agree on that we need to change both two callsites in UGI.
For the new API, if we keep it as it, is a bit confusing when user calls with false value when user does not need to ignore last login time. In that case, we still ignore the TGT check since the first parameter is always false.

  public void reloginFromKeytab(boolean ignoreTimeElapsed) throws IOException {
    reloginFromKeytab(false, ignoreTimeElapsed);
  }

Since the forceful login is the main target, how about we create a new method name, and use false for both parameter?

public void forceReloginFromKeytab() throws IOException {
    reloginFromKeytab(false, true);
}

I think since this a bug, it's better not to create followup JIRAs but instead create a new full pull request. So when people backport or check the change for debugging, they do not need to jump different PRs to understand what's happening as addendum. I will revert the commit in git repo, and the new PR will be including the full code. How about that?

sguggilam · 2020-08-26T17:34:15Z

#2 Since the forceful login is the main target, how about we create a new method name, and use false for both parameter?
This makes sense
#3 Sure @liuml07 , I can send out a new PR with the full code. You can revert this

Thanks again for going over the code and catching this

…tion class (#2197)" This reverts commit a932796.

liuml07 · 2020-08-26T17:42:37Z

@sguggilam

and use false for both parameter?

Yeah, the second parameter actually is true, but you got what I meant 😄 as the above code snippet. I have reverted from trunk branch, and will do that for other branches. Now you can file a new PR to include everything (updated).

Thanks!

sguggilam · 2020-08-26T17:44:13Z

Yes @liuml07 I noticed that but found your code snippet to be right and felt it was a typo. Thanks, will send out a new PR

…tion class (#2197)" This reverts commit da129a6.

…tion class (#2197)" This reverts commit d06f0de.

…tion class (#2197)" This reverts commit 12fb9e0.

liuml07 requested review from liuml07 and steveloughran August 6, 2020 21:30

liuml07 assigned sguggilam Aug 6, 2020

liuml07 added the security label Aug 6, 2020

liuml07 requested review from arp7 and kihwal August 7, 2020 18:02

arp7 requested a review from xiaoyuyao August 7, 2020 18:17

liuml07 approved these changes Aug 17, 2020

View reviewed changes

Sandeep Guggilam added 4 commits August 24, 2020 16:05

HADOOP-17159 Ability for forceful relogin in UserGroupInformation class

a8e314f

Incorporate review comments

8f0ff18

fix typo

ed8b563

fix checkstyle

d6ef206

sguggilam force-pushed the trunk branch from 314e1d5 to d6ef206 Compare August 24, 2020 23:06

liuml07 merged commit a932796 into apache:trunk Aug 25, 2020

sguggilam mentioned this pull request Aug 26, 2020

HADOOP-17159. Make UGI support forceful relogin from keytab ignoring the last login time (branch-2.10) #2245

Merged

liuml07 added a commit that referenced this pull request Aug 26, 2020

Revert "HADOOP-17159 Ability for forceful relogin in UserGroupInforma…

b7745b0

…tion class (#2197)" This reverts commit a932796.

asfgit pushed a commit that referenced this pull request Aug 26, 2020

Revert "HADOOP-17159 Ability for forceful relogin in UserGroupInforma…

5e52955

…tion class (#2197)" This reverts commit a932796.

asfgit pushed a commit that referenced this pull request Aug 26, 2020

Revert "HADOOP-17159 Ability for forceful relogin in UserGroupInforma…

ee7d214

…tion class (#2197)" This reverts commit da129a6.

asfgit pushed a commit that referenced this pull request Aug 26, 2020

Revert "HADOOP-17159 Ability for forceful relogin in UserGroupInforma…

acec431

…tion class (#2197)" This reverts commit d06f0de.

asfgit pushed a commit that referenced this pull request Aug 26, 2020

Revert "HADOOP-17159 Ability for forceful relogin in UserGroupInforma…

9f94c9e

…tion class (#2197)" This reverts commit 12fb9e0.

sguggilam mentioned this pull request Aug 26, 2020

HADOOP-17159. Make UGI support forceful relogin from keytab ignoring the last login time #2249

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HADOOP-17159 Ability for forceful relogin in UserGroupInformation class #2197

HADOOP-17159 Ability for forceful relogin in UserGroupInformation class #2197

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sguggilam commented Aug 6, 2020 • edited by liuml07 Loading Uh oh! There was an error while loading. Please reload this page.

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The commit was reverted and a new PR for this JIRA is posted as #2249

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sguggilam commented Aug 6, 2020 •

edited by liuml07

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liuml07 commented Aug 26, 2020 •

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liuml07 commented Aug 26, 2020 •

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