[jira] [Commented] (HIVE-4235) CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists
[ https://issues.apache.org/jira/browse/HIVE-4235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13623027#comment-13623027 ] Hudson commented on HIVE-4235: -- Integrated in Hive-trunk-hadoop2 #138 (See [https://builds.apache.org/job/Hive-trunk-hadoop2/138/]) HIVE-4235. CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. (Gang Tim Liu via kevinwilfong) (Revision 1462373) Result = FAILURE kevinwilfong : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVNview=revrev=1462373 Files : * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists Key: HIVE-4235 URL: https://issues.apache.org/jira/browse/HIVE-4235 Project: Hive Issue Type: Bug Components: JDBC, Query Processor, SQL Reporter: Gang Tim Liu Assignee: Gang Tim Liu Fix For: 0.11.0 Attachments: HIVE-4235.patch.1 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. It uses Hive.java's getTablesByPattern(...) to check if table exists. It involves regular expression and eventually database join. Very efficient. It can cause database lock time increase and hurt db performance if a lot of such commands hit database. The suggested approach is to use getTable(...) since we know tablename already -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HIVE-4235) CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists
[ https://issues.apache.org/jira/browse/HIVE-4235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13617654#comment-13617654 ] Hudson commented on HIVE-4235: -- Integrated in Hive-trunk-h0.21 #2035 (See [https://builds.apache.org/job/Hive-trunk-h0.21/2035/]) HIVE-4235. CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. (Gang Tim Liu via kevinwilfong) (Revision 1462373) Result = FAILURE kevinwilfong : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVNview=revrev=1462373 Files : * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists Key: HIVE-4235 URL: https://issues.apache.org/jira/browse/HIVE-4235 Project: Hive Issue Type: Bug Components: JDBC, Query Processor, SQL Reporter: Gang Tim Liu Assignee: Gang Tim Liu Fix For: 0.11.0 Attachments: HIVE-4235.patch.1 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. It uses Hive.java's getTablesByPattern(...) to check if table exists. It involves regular expression and eventually database join. Very efficient. It can cause database lock time increase and hurt db performance if a lot of such commands hit database. The suggested approach is to use getTable(...) since we know tablename already -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HIVE-4235) CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists
[ https://issues.apache.org/jira/browse/HIVE-4235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13616964#comment-13616964 ] Gang Tim Liu commented on HIVE-4235: Kevin, thank you very much. Tim CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists Key: HIVE-4235 URL: https://issues.apache.org/jira/browse/HIVE-4235 Project: Hive Issue Type: Bug Components: JDBC, Query Processor, SQL Reporter: Gang Tim Liu Assignee: Gang Tim Liu Fix For: 0.11.0 Attachments: HIVE-4235.patch.1 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. It uses Hive.java's getTablesByPattern(...) to check if table exists. It involves regular expression and eventually database join. Very efficient. It can cause database lock time increase and hurt db performance if a lot of such commands hit database. The suggested approach is to use getTable(...) since we know tablename already -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HIVE-4235) CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists
[ https://issues.apache.org/jira/browse/HIVE-4235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13614649#comment-13614649 ] Gang Tim Liu commented on HIVE-4235: https://reviews.facebook.net/D9729 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists Key: HIVE-4235 URL: https://issues.apache.org/jira/browse/HIVE-4235 Project: Hive Issue Type: Bug Components: JDBC, Query Processor, SQL Reporter: Gang Tim Liu Assignee: Gang Tim Liu Attachments: HIVE-4235.patch.1 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. It uses Hive.java's getTablesByPattern(...) to check if table exists. It involves regular expression and eventually database join. Very efficient. It can cause database lock time increase and hurt db performance if a lot of such commands hit database. The suggested approach is to use getTable(...) since we know tablename already -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HIVE-4235) CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists
[ https://issues.apache.org/jira/browse/HIVE-4235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13614742#comment-13614742 ] Kevin Wilfong commented on HIVE-4235: - +1 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists Key: HIVE-4235 URL: https://issues.apache.org/jira/browse/HIVE-4235 Project: Hive Issue Type: Bug Components: JDBC, Query Processor, SQL Reporter: Gang Tim Liu Assignee: Gang Tim Liu Attachments: HIVE-4235.patch.1 CREATE TABLE IF NOT EXISTS uses inefficient way to check if table exists. It uses Hive.java's getTablesByPattern(...) to check if table exists. It involves regular expression and eventually database join. Very efficient. It can cause database lock time increase and hurt db performance if a lot of such commands hit database. The suggested approach is to use getTable(...) since we know tablename already -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
