[
https://issues.apache.org/jira/browse/DRILL-4863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15437429#comment-15437429
]
Christopher Altman commented on DRILL-4863:
-------------------------------------------
{code}
0: jdbc:drill:zk=local> !set maxwidth 10000
0: jdbc:drill:zk=local> explain plan for SELECT * FROM (SELECT count(*) from
mysql.scan_test_data.acme_sales ) T LIMIT 0;
Error: SYSTEM ERROR: NullPointerException
[Error Id: 053cb4d5-ca44-4f64-bda5-e7352532d15e on 10.0.1.241:31010]
(state=,code=0)
{code}
AND when changing the limit to 1
{code}
0: jdbc:drill:zk=local> explain plan for SELECT * FROM (SELECT count(*) from
mysql.scan_test_data.acme_sales ) T LIMIT 1;
+------+------+
| text | json |
+------+------+
| 00-00 Screen
00-01 SelectionVectorRemover
00-02 Limit(fetch=[1])
00-03 Jdbc(sql=[SELECT COUNT(*) AS `EXPR$0`
FROM (SELECT 0 AS `$f0`
FROM `scan_test_data`.`acme_sales`) AS `t`])
| {
"head" : {
"version" : 1,
"generator" : {
"type" : "ExplainHandler",
"info" : ""
},
"type" : "APACHE_DRILL_PHYSICAL",
"options" : [ ],
"queue" : 0,
"resultMode" : "EXEC"
},
"graph" : [ {
"pop" : "jdbc-scan",
"@id" : 3,
"sql" : "SELECT COUNT(*) AS `EXPR$0`\nFROM (SELECT 0 AS `$f0`\nFROM
`scan_test_data`.`acme_sales`) AS `t`",
"config" : {
"type" : "jdbc",
"driver" : "com.mysql.jdbc.Driver",
"url" : "jdbc:mysql://dev-db.emcien.com:3306",
"username" : "scan_test_data",
"password" : "****",
"enabled" : true
},
"userName" : "",
"cost" : 1.0
}, {
"pop" : "limit",
"@id" : 2,
"child" : 3,
"first" : 0,
"last" : 1,
"initialAllocation" : 1000000,
"maxAllocation" : 10000000000,
"cost" : 1.0
}, {
"pop" : "selection-vector-remover",
"@id" : 1,
"child" : 2,
"initialAllocation" : 1000000,
"maxAllocation" : 10000000000,
"cost" : 1.0
}, {
"pop" : "screen",
"@id" : 0,
"child" : 1,
"initialAllocation" : 1000000,
"maxAllocation" : 10000000000,
"cost" : 1.0
} ]
} |
+------+------+
1 row selected (0.464 seconds)
{code}
> JDBC Storage Plugin SYSTEM ERROR: NullPointerException Error
> ------------------------------------------------------------
>
> Key: DRILL-4863
> URL: https://issues.apache.org/jira/browse/DRILL-4863
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - JDBC
> Affects Versions: 1.7.0
> Environment: * Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-40-generic x86_64)
> * Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
> * Data Source: mysql Ver 14.14 Distrib 5.7.10
> Reporter: Christopher Altman
>
> When running the query:
> {code}
> SELECT * FROM (SELECT count(*) from mysql.test.acme_sales ) T LIMIT 0
> {code}
> I receive the error:
> {code}
> SYSTEM ERROR: NullPointerException
> {code}
> Here are the logs
> {code}
> SYSTEM ERROR: NullPointerException
> (org.apache.drill.exec.work.foreman.ForemanException) Unexpected exception
> during fragment initialization: null
> org.apache.drill.exec.work.foreman.Foreman.run():271
> java.util.concurrent.ThreadPoolExecutor.runWorker():1145
> java.util.concurrent.ThreadPoolExecutor$Worker.run():615
> java.lang.Thread.run():745
> Caused By (java.lang.NullPointerException) null
>
> org.apache.drill.exec.planner.sql.handlers.FindLimit0Visitor$FindHardDistributionScans.visit():262
> org.apache.calcite.rel.core.TableScan.accept():166
> org.apache.calcite.rel.RelShuttleImpl.visitChild():53
> org.apache.calcite.rel.RelShuttleImpl.visitChildren():68
> org.apache.calcite.rel.RelShuttleImpl.visit():126
> org.apache.calcite.rel.AbstractRelNode.accept():256
> org.apache.calcite.rel.RelShuttleImpl.visitChild():53
> org.apache.calcite.rel.RelShuttleImpl.visitChildren():68
> org.apache.calcite.rel.RelShuttleImpl.visit():126
> org.apache.calcite.rel.AbstractRelNode.accept():256
> org.apache.calcite.rel.RelShuttleImpl.visitChild():53
> org.apache.calcite.rel.RelShuttleImpl.visitChildren():68
> org.apache.calcite.rel.RelShuttleImpl.visit():126
> org.apache.calcite.rel.AbstractRelNode.accept():256
> org.apache.calcite.rel.RelShuttleImpl.visitChild():53
> org.apache.calcite.rel.RelShuttleImpl.visitChildren():68
> org.apache.calcite.rel.RelShuttleImpl.visit():126
> org.apache.calcite.rel.AbstractRelNode.accept():256
>
> org.apache.drill.exec.planner.sql.handlers.FindLimit0Visitor.containsLimit0():129
>
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel():259
>
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel():286
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan():168
> org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan():94
> org.apache.drill.exec.work.foreman.Foreman.runSQL():978
> org.apache.drill.exec.work.foreman.Foreman.run():257
> java.util.concurrent.ThreadPoolExecutor.runWorker():1145
> java.util.concurrent.ThreadPoolExecutor$Worker.run():615
> java.lang.Thread.run():745
>
> Error Id: c9a4bc51-a18c-408a-9958-23124b9aac47 on 10.0.1.241:31010]
> org.apache.drill.common.exceptions.UserException: SYSTEM ERROR:
> NullPointerException
> [Error Id: c9a4bc51-a18c-408a-9958-23124b9aac47 on 10.0.1.241:31010]
> at
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:543)
> ~[drill-common-1.7.0.jar:1.7.0]
> at
> org.apache.drill.exec.work.foreman.Foreman$ForemanResult.close(Foreman.java:791)
> [drill-java-exec-1.7.0.jar:1.7.0]
> at
> org.apache.drill.exec.work.foreman.Foreman.moveToState(Foreman.java:901)
> [drill-java-exec-1.7.0.jar:1.7.0]
> at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:271)
> [drill-java-exec-1.7.0.jar:1.7.0]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> [na:1.7.0_80]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> [na:1.7.0_80]
> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]
> Caused by: org.apache.drill.exec.work.foreman.ForemanException: Unexpected
> exception during fragment initialization: null
> ... 4 common frames omitted
> Caused by: java.lang.NullPointerException: null
> at
> org.apache.drill.exec.planner.sql.handlers.FindLimit0Visitor$FindHardDistributionScans.visit(FindLimit0Visitor.java:262)
> ~[drill-java-exec-1.7.0.jar:1.7.0]
> at org.apache.calcite.rel.core.TableScan.accept(TableScan.java:166)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChild(RelShuttleImpl.java:53)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChildren(RelShuttleImpl.java:68)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at org.apache.calcite.rel.RelShuttleImpl.visit(RelShuttleImpl.java:126)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.AbstractRelNode.accept(AbstractRelNode.java:256)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChild(RelShuttleImpl.java:53)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChildren(RelShuttleImpl.java:68)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at org.apache.calcite.rel.RelShuttleImpl.visit(RelShuttleImpl.java:126)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.AbstractRelNode.accept(AbstractRelNode.java:256)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChild(RelShuttleImpl.java:53)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChildren(RelShuttleImpl.java:68)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at org.apache.calcite.rel.RelShuttleImpl.visit(RelShuttleImpl.java:126)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.AbstractRelNode.accept(AbstractRelNode.java:256)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChild(RelShuttleImpl.java:53)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.RelShuttleImpl.visitChildren(RelShuttleImpl.java:68)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at org.apache.calcite.rel.RelShuttleImpl.visit(RelShuttleImpl.java:126)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.calcite.rel.AbstractRelNode.accept(AbstractRelNode.java:256)
> ~[calcite-core-1.4.0-drill-r11.jar:1.4.0-drill-r11]
> at
> org.apache.drill.exec.planner.sql.handlers.FindLimit0Visitor.containsLimit0(FindLimit0Visitor.java:129)
> ~[drill-java-exec-1.7.0.jar:1.7.0]
> at
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:259)
> ~[drill-java-exec-1.7.0.jar:1.7.0]
> at
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:286)
> ~[drill-java-exec-1.7.0.jar:1.7.0]
> at
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan(DefaultSqlHandler.java:168)
> ~[drill-java-exec-1.7.0.jar:1.7.0]
> at
> org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:94)
> ~[drill-java-exec-1.7.0.jar:1.7.0]
> at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:978)
> [drill-java-exec-1.7.0.jar:1.7.0]
> at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:257)
> [drill-java-exec-1.7.0.jar:1.7.0]
> ... 3 common frames omitted
> {code}
> I am using Apache Drill 1.7 on a Ubuntu 14.04 Server Connecting to MySql 5.7.
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