{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/36381662","id":36381662,"diff_hunk":"@@ -87,12 +87,16 @@ public static int calculateBitSetWidthInBytes(int numFields) {\n \n   public static boolean isFixedLength(DataType dt) {\n     if (dt instanceof DecimalType) {\n-      return ((DecimalType) dt).precision() < Decimal.MAX_LONG_DIGITS();\n+      return ((DecimalType) dt).precision() <= Decimal.MAX_LONG_DIGITS();\n     } else {\n       return settableFieldTypes.contains(dt);\n     }\n   }\n \n+  public static boolean isSettable(DataType dt) {","path":"sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeRow.java","position":20,"original_position":20,"commit_id":"cd6c524cb623a6ed99fccbe7956ba65e7ee3f799","original_commit_id":"cd6c524cb623a6ed99fccbe7956ba65e7ee3f799","user":{"login":"rxin","id":323388,"avatar_url":"https://avatars.githubusercontent.com/u/323388?v=3","gravatar_id":"","url":"https://api.github.com/users/rxin","html_url":"https://github.com/rxin","followers_url":"https://api.github.com/users/rxin/followers","following_url":"https://api.github.com/users/rxin/following{/other_user}","gists_url":"https://api.github.com/users/rxin/gists{/gist_id}","starred_url":"https://api.github.com/users/rxin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rxin/subscriptions","organizations_url":"https://api.github.com/users/rxin/orgs","repos_url":"https://api.github.com/users/rxin/repos","events_url":"https://api.github.com/users/rxin/events{/privacy}","received_events_url":"https://api.github.com/users/rxin/received_events","type":"User","site_admin":false},"body":"ah ic you can't combine them since it's used in other places as well -- in that case renaming this to isMutable makes more sense.\r\n\r\n","created_at":"2015-08-06T05:08:29Z","updated_at":"2015-08-06T05:08:29Z","html_url":"https://github.com/apache/spark/pull/7978#discussion_r36381662","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/7978","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/36381662"},"html":{"href":"https://github.com/apache/spark/pull/7978#discussion_r36381662"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/7978"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/7978","id":41739731,"html_url":"https://github.com/apache/spark/pull/7978","diff_url":"https://github.com/apache/spark/pull/7978.diff","patch_url":"https://github.com/apache/spark/pull/7978.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/7978","number":7978,"state":"open","locked":false,"title":"[SPARK-9644] [SQL] Support update DecimalType with precision > 18 in UnsafeRow","user":{"login":"davies","id":40902,"avatar_url":"https://avatars.githubusercontent.com/u/40902?v=3","gravatar_id":"","url":"https://api.github.com/users/davies","html_url":"https://github.com/davies","followers_url":"https://api.github.com/users/davies/followers","following_url":"https://api.github.com/users/davies/following{/other_user}","gists_url":"https://api.github.com/users/davies/gists{/gist_id}","starred_url":"https://api.github.com/users/davies/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davies/subscriptions","organizations_url":"https://api.github.com/users/davies/orgs","repos_url":"https://api.github.com/users/davies/repos","events_url":"https://api.github.com/users/davies/events{/privacy}","received_events_url":"https://api.github.com/users/davies/received_events","type":"User","site_admin":false},"body":"In order to support update a varlength (actually fixed length) object, the space should be preserved even  it's null. And, we can't call setNullAt(i) for it anymore, we because setNullAt(i) will remove the offset of the preserved space, should call setDecimal(i, null, precision) instead.\r\n\r\nAfter this, we can do hash based aggregation on DecimalType with precision > 18. In a tests, this could decrease the end-to-end run time of aggregation query from 37 seconds (sort based) to 24 seconds (hash based).\r\n\r\ncc @rxin \r\n\r\n","created_at":"2015-08-06T00:00:47Z","updated_at":"2015-08-06T05:08:29Z","closed_at":null,"merged_at":null,"merge_commit_sha":"9a6df3822b50fd7106ff176345c9b2c97dab8842","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/7978/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/7978/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/7978/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/cd6c524cb623a6ed99fccbe7956ba65e7ee3f799","head":{"label":"davies:update_decimal","ref":"update_decimal","sha":"cd6c524cb623a6ed99fccbe7956ba65e7ee3f799","user":{"login":"davies","id":40902,"avatar_url":"https://avatars.githubusercontent.com/u/40902?v=3","gravatar_id":"","url":"https://api.github.com/users/davies","html_url":"https://github.com/davies","followers_url":"https://api.github.com/users/davies/followers","following_url":"https://api.github.com/users/davies/following{/other_user}","gists_url":"https://api.github.com/users/davies/gists{/gist_id}","starred_url":"https://api.github.com/users/davies/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davies/subscriptions","organizations_url":"https://api.github.com/users/davies/orgs","repos_url":"https://api.github.com/users/davies/repos","events_url":"https://api.github.com/users/davies/events{/privacy}","received_events_url":"https://api.github.com/users/davies/received_events","type":"User","site_admin":false},"repo":{"id":21724875,"name":"spark","full_name":"davies/spark","owner":{"login":"davies","id":40902,"avatar_url":"https://avatars.githubusercontent.com/u/40902?v=3","gravatar_id":"","url":"https://api.github.com/users/davies","html_url":"https://github.com/davies","followers_url":"https://api.github.com/users/davies/followers","following_url":"https://api.github.com/users/davies/following{/other_user}","gists_url":"https://api.github.com/users/davies/gists{/gist_id}","starred_url":"https://api.github.com/users/davies/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davies/subscriptions","organizations_url":"https://api.github.com/users/davies/orgs","repos_url":"https://api.github.com/users/davies/repos","events_url":"https://api.github.com/users/davies/events{/privacy}","received_events_url":"https://api.github.com/users/davies/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/davies/spark","description":"Mirror of Apache Spark","fork":true,"url":"https://api.github.com/repos/davies/spark","forks_url":"https://api.github.com/repos/davies/spark/forks","keys_url":"https://api.github.com/repos/davies/spark/keys{/key_id}","collaborators_url":"https://api.github.com/repos/davies/spark/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/davies/spark/teams","hooks_url":"https://api.github.com/repos/davies/spark/hooks","issue_events_url":"https://api.github.com/repos/davies/spark/issues/events{/number}","events_url":"https://api.github.com/repos/davies/spark/events","assignees_url":"https://api.github.com/repos/davies/spark/assignees{/user}","branches_url":"https://api.github.com/repos/davies/spark/branches{/branch}","tags_url":"https://api.github.com/repos/davies/spark/tags","blobs_url":"https://api.github.com/repos/davies/spark/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/davies/spark/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/davies/spark/git/refs{/sha}","trees_url":"https://api.github.com/repos/davies/spark/git/trees{/sha}","statuses_url":"https://api.github.com/repos/davies/spark/statuses/{sha}","languages_url":"https://api.github.com/repos/davies/spark/languages","stargazers_url":"https://api.github.com/repos/davies/spark/stargazers","contributors_url":"https://api.github.com/repos/davies/spark/contributors","subscribers_url":"https://api.github.com/repos/davies/spark/subscribers","subscription_url":"https://api.github.com/repos/davies/spark/subscription","commits_url":"https://api.github.com/repos/davies/spark/commits{/sha}","git_commits_url":"https://api.github.com/repos/davies/spark/git/commits{/sha}","comments_url":"https://api.github.com/repos/davies/spark/comments{/number}","issue_comment_url":"https://api.github.com/repos/davies/spark/issues/comments{/number}","contents_url":"https://api.github.com/repos/davies/spark/contents/{+path}","compare_url":"https://api.github.com/repos/davies/spark/compare/{base}...{head}","merges_url":"https://api.github.com/repos/davies/spark/merges","archive_url":"https://api.github.com/repos/davies/spark/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/davies/spark/downloads","issues_url":"https://api.github.com/repos/davies/spark/issues{/number}","pulls_url":"https://api.github.com/repos/davies/spark/pulls{/number}","milestones_url":"https://api.github.com/repos/davies/spark/milestones{/number}","notifications_url":"https://api.github.com/repos/davies/spark/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/davies/spark/labels{/name}","releases_url":"https://api.github.com/repos/davies/spark/releases{/id}","created_at":"2014-07-11T06:39:41Z","updated_at":"2015-04-08T19:45:01Z","pushed_at":"2015-08-06T00:07:33Z","git_url":"git://github.com/davies/spark.git","ssh_url":"git@github.com:davies/spark.git","clone_url":"https://github.com/davies/spark.git","svn_url":"https://github.com/davies/spark","homepage":null,"size":126577,"stargazers_count":1,"watchers_count":1,"language":"Scala","has_issues":false,"has_downloads":true,"has_wiki":false,"has_pages":false,"forks_count":0,"mirror_url":null,"open_issues_count":0,"forks":0,"open_issues":0,"watchers":1,"default_branch":"master"}},"base":{"label":"apache:master","ref":"master","sha":"9c878923db6634effed98c99bf24dd263bb7c6ad","user":{"login":"apache","id":47359,"avatar_url":"https://avatars.githubusercontent.com/u/47359?v=3","gravatar_id":"","url":"https://api.github.com/users/apache","html_url":"https://github.com/apache","followers_url":"https://api.github.com/users/apache/followers","following_url":"https://api.github.com/users/apache/following{/other_user}","gists_url":"https://api.github.com/users/apache/gists{/gist_id}","starred_url":"https://api.github.com/users/apache/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/apache/subscriptions","organizations_url":"https://api.github.com/users/apache/orgs","repos_url":"https://api.github.com/users/apache/repos","events_url":"https://api.github.com/users/apache/events{/privacy}","received_events_url":"https://api.github.com/users/apache/received_events","type":"Organization","site_admin":false},"repo":{"id":17165658,"name":"spark","full_name":"apache/spark","owner":{"login":"apache","id":47359,"avatar_url":"https://avatars.githubusercontent.com/u/47359?v=3","gravatar_id":"","url":"https://api.github.com/users/apache","html_url":"https://github.com/apache","followers_url":"https://api.github.com/users/apache/followers","following_url":"https://api.github.com/users/apache/following{/other_user}","gists_url":"https://api.github.com/users/apache/gists{/gist_id}","starred_url":"https://api.github.com/users/apache/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/apache/subscriptions","organizations_url":"https://api.github.com/users/apache/orgs","repos_url":"https://api.github.com/users/apache/repos","events_url":"https://api.github.com/users/apache/events{/privacy}","received_events_url":"https://api.github.com/users/apache/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/apache/spark","description":"Mirror of Apache Spark","fork":false,"url":"https://api.github.com/repos/apache/spark","forks_url":"https://api.github.com/repos/apache/spark/forks","keys_url":"https://api.github.com/repos/apache/spark/keys{/key_id}","collaborators_url":"https://api.github.com/repos/apache/spark/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/apache/spark/teams","hooks_url":"https://api.github.com/repos/apache/spark/hooks","issue_events_url":"https://api.github.com/repos/apache/spark/issues/events{/number}","events_url":"https://api.github.com/repos/apache/spark/events","assignees_url":"https://api.github.com/repos/apache/spark/assignees{/user}","branches_url":"https://api.github.com/repos/apache/spark/branches{/branch}","tags_url":"https://api.github.com/repos/apache/spark/tags","blobs_url":"https://api.github.com/repos/apache/spark/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/apache/spark/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/apache/spark/git/refs{/sha}","trees_url":"https://api.github.com/repos/apache/spark/git/trees{/sha}","statuses_url":"https://api.github.com/repos/apache/spark/statuses/{sha}","languages_url":"https://api.github.com/repos/apache/spark/languages","stargazers_url":"https://api.github.com/repos/apache/spark/stargazers","contributors_url":"https://api.github.com/repos/apache/spark/contributors","subscribers_url":"https://api.github.com/repos/apache/spark/subscribers","subscription_url":"https://api.github.com/repos/apache/spark/subscription","commits_url":"https://api.github.com/repos/apache/spark/commits{/sha}","git_commits_url":"https://api.github.com/repos/apache/spark/git/commits{/sha}","comments_url":"https://api.github.com/repos/apache/spark/comments{/number}","issue_comment_url":"https://api.github.com/repos/apache/spark/issues/comments{/number}","contents_url":"https://api.github.com/repos/apache/spark/contents/{+path}","compare_url":"https://api.github.com/repos/apache/spark/compare/{base}...{head}","merges_url":"https://api.github.com/repos/apache/spark/merges","archive_url":"https://api.github.com/repos/apache/spark/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/apache/spark/downloads","issues_url":"https://api.github.com/repos/apache/spark/issues{/number}","pulls_url":"https://api.github.com/repos/apache/spark/pulls{/number}","milestones_url":"https://api.github.com/repos/apache/spark/milestones{/number}","notifications_url":"https://api.github.com/repos/apache/spark/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/apache/spark/labels{/name}","releases_url":"https://api.github.com/repos/apache/spark/releases{/id}","created_at":"2014-02-25T08:00:08Z","updated_at":"2015-08-06T03:48:49Z","pushed_at":"2015-08-06T04:55:35Z","git_url":"git://github.com/apache/spark.git","ssh_url":"git@github.com:apache/spark.git","clone_url":"https://github.com/apache/spark.git","svn_url":"https://github.com/apache/spark","homepage":null,"size":1586753,"stargazers_count":4977,"watchers_count":4977,"language":"Scala","has_issues":false,"has_downloads":true,"has_wiki":false,"has_pages":false,"forks_count":4526,"mirror_url":"git://git.apache.org/spark.git","open_issues_count":317,"forks":4526,"open_issues":317,"watchers":4977,"default_branch":"master"}},"_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/7978"},"html":{"href":"https://github.com/apache/spark/pull/7978"},"issue":{"href":"https://api.github.com/repos/apache/spark/issues/7978"},"comments":{"href":"https://api.github.com/repos/apache/spark/issues/7978/comments"},"review_comments":{"href":"https://api.github.com/repos/apache/spark/pulls/7978/comments"},"review_comment":{"href":"https://api.github.com/repos/apache/spark/pulls/comments{/number}"},"commits":{"href":"https://api.github.com/repos/apache/spark/pulls/7978/commits"},"statuses":{"href":"https://api.github.com/repos/apache/spark/statuses/cd6c524cb623a6ed99fccbe7956ba65e7ee3f799"}}}}