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After these changes the following methods\r\nwould not show up as much in the JFR results.\r\n\r\n * Sped up validation of FateId.  When deleting 1 million tablets, 1\r\n   million fate id are written and then read.  Was seeing the regex for\r\n   validation show up when reading 1 million tablets w/ fate ids.\r\n * Sped up getting children from ZooCache.  The code related to service\r\n   locks was calling this.\r\n * Sped up parsing of server locks by speeding up the UUID validation,\r\n   that is where it was spending most of its time.\r\n * Sped up metadata constraint.  Seeing conditional mutation metadata\r\n   updates spend a lot of time checking metadata constraints.\r\n * Sped up the conditional check for absent walogs by removing the\r\n   creation of an empty TabletMetadata object\r\n * Sped up SetEncodingIterator.encode by having a special case for size\r\n   1 and avoiding streams for size >1.\r\n * Increased memory of manager and tsevers in SplitMillionIT because GC\r\n   pauses were being seen\r\n * Pre split the metadata table in SplitMillionIT.  This allowed the\r\n   tablets to spread across the two tablet servers.  Pre splitting the\r\n   metadata table uncovered a bug.  The add splits table operation would\r\n   fail if metadata tables it needed were not hosted.  Fixed this bug.\r\n * Made some other misc changes for little things that were seen in\r\n   profiling.\r\n\r\n SplitMillionIT is now running faster, however it still does not seem as\r\nfast as it used to be. Further investigation is needed. These changes\r\nare mostly good general performance fixes.  Can follow up wit more fixes\r\nas investigation continues.\r\n\r\n\r\nCo-authored-by: Dave Marion <dlmarion@apache.org>","shortMessageHtmlLink":"Fixed performance issues that were impacting SplitMillionIT (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"2299092738\" data-permission-text=\"Title is private\" data-url=\"https://github.com/apache/accumulo/issues/4563\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/apache/accumulo/pull/4563/hovercard\" href=\"https://github.com/apache/accumulo/pull/4563\">#4563</a>)"}},{"before":"fc878c19d7cb9db7ca00f84b18131ee6712f3752","after":"9d4dc21abce1e55daf21f06fdf87f1cffac743ef","ref":"refs/heads/elasticity","pushedAt":"2024-05-18T16:00:12.000Z","pushType":"pr_merge","commitsCount":1,"pusher":{"login":"cshannon","name":"Christopher L. Shannon","path":"/cshannon","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/123009?s=80&v=4"},"commit":{"message":"Allow system compactions to run if zero user compaction jobs have run (#4480)\n\nThis change will allow system compactions to postpone user compactions\r\nthat have had no jobs run yet. Before this, if a user compaction was in\r\nthe queue and had selected files that overlapped it would block system\r\ncompactions from running. Now if there are selected files, but the user\r\ncompaction is not running and hasn't had any jobs completed, the\r\ncoordinator will clear the selectedFiles column so that the system\r\ncompaction can run if the expiration time has passed. The fate operation \r\nwill reset the column again while trying to make progress.\r\n\r\nThis closes #4454\r\n\r\nCo-authored-by: Keith Turner <kturner@apache.org>","shortMessageHtmlLink":"Allow system compactions to run if zero user compaction jobs have run (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"2254655474\" data-permission-text=\"Title is private\" data-url=\"https://github.com/apache/accumulo/issues/4480\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/apache/accumulo/pull/4480/hovercard\" href=\"https://github.com/apache/accumulo/pull/4480\">…</a>"}},{"before":"8f68c3bade71e623326e072f235b23bcfe13f68e","after":"fc878c19d7cb9db7ca00f84b18131ee6712f3752","ref":"refs/heads/elasticity","pushedAt":"2024-05-17T20:57:50.000Z","pushType":"push","commitsCount":5,"pusher":{"login":"cshannon","name":"Christopher L. Shannon","path":"/cshannon","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/123009?s=80&v=4"},"commit":{"message":"Merge branch 'main' into elasticity","shortMessageHtmlLink":"Merge branch 'main' into elasticity"}}],"hasNextPage":true,"hasPreviousPage":false,"activityType":"all","actor":null,"timePeriod":"all","sort":"DESC","perPage":30,"cursor":"djE6ks8AAAAEUWZmhAA","startCursor":null,"endCursor":null}},"title":"Activity · apache/accumulo"}