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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6309) Embedded Derby throws java.lang.OutOfMemoryError: Java heap space while importing data
Date Tue, 20 Aug 2013 12:23:51 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13744918#comment-13744918
] 

Knut Anders Hatlen commented on DERBY-6309:
-------------------------------------------

I tried to reproduce the OutOfMemoryError by using a 700 MB input file that contained the
following line repeated over and over:

1,2,"abcdefghijklmnopqrstuvwxyzæøåABCDEFGHIJKLMNOPQRSTUVWXYZÆØÅ"

The data import was performed in ij by executing these statements:

connect 'jdbc:derby:db;create=true';
create table t(x int, y int, z varchar(100));
call syscs_util.syscs_import_data(null, 'T', null, null, 'db.csv', null, null, null, 1);

Unfortunately, this did not cause an OutOfMemoryError when I ran the import with 18 MB of
Java heap space, so it seems like there's something more to the problem.

If you could add some details about what the table looks like (columns and types) and any
indexes, triggers or constraints on the table, someone might have better luck reproducing
it.
                
> Embedded Derby throws java.lang.OutOfMemoryError: Java heap space while importing data
> --------------------------------------------------------------------------------------
>
>                 Key: DERBY-6309
>                 URL: https://issues.apache.org/jira/browse/DERBY-6309
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.10.1.1
>            Reporter: Manikandan Chellappan
>
> While importing large files (> 500 MB) using SYSCS_UTIL.SYSCS_IMPORT_DATA procedure,
derby runs out of heap space. The java process which is running the derby has 2GB of heap
space.  The following exception is logged in the derby.log.
> ERROR 38000: The exception 'java.lang.OutOfMemoryError: Java heap space' was thrown while
evaluating an expression.
> 	at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
> 	at org.apache.derby.iapi.error.StandardException.unexpectedUserException(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.VTIResultSet.getNextRowCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.getNextRowCore(Unknown
Source)
> 	at org.apache.derby.impl.sql.execute.NormalizeResultSet.getNextRowCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.NoPutResultSetImpl.getNextRowFromRowSource(Unknown
Source)
> 	at org.apache.derby.impl.store.access.heap.HeapController.load(Unknown Source)
> 	at org.apache.derby.impl.store.access.heap.Heap.load(Unknown Source)
> 	at org.apache.derby.impl.store.access.RAMTransaction.loadConglomerate(Unknown Source)
> 	at org.apache.derby.impl.store.access.RAMTransaction.recreateAndLoadConglomerate(Unknown
Source)
> 	at org.apache.derby.impl.sql.execute.InsertResultSet.bulkInsertCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.InsertResultSet.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeLargeUpdate(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeUpdate(Unknown Source)
> 	at org.apache.derby.impl.load.Import.performImport(Unknown Source)
> 	at org.apache.derby.impl.load.Import.importData(Unknown Source)
> 	at org.apache.derby.catalog.SystemProcedures.SYSCS_IMPORT_DATA(Unknown Source)
> 	at org.apache.derby.exe.ace3c78554x013fxcb2cx4da6x00000f7e08680.g0(Unknown Source)
> 	at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:601)
> 	at org.apache.derby.impl.services.reflect.ReflectMethod.invoke(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.CallStatementResultSet.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.execute(Unknown Source)
> 	at oracle.retail.stores.iddi.IDDIDerbyWriter.importTable(IDDIDerbyWriter.java:233)
> 	at oracle.retail.stores.domain.iddi.OfflineDBProducer$ImportThread.call(OfflineDBProducer.java:488)
> 	at oracle.retail.stores.domain.iddi.OfflineDBProducer$ImportThread.call(OfflineDBProducer.java:1)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> 	at java.lang.Thread.run(Thread.java:722)
> Caused by: java.lang.OutOfMemoryError: Java heap space
> 	at org.apache.derby.impl.load.ImportReadData.readNextDelimitedRow(Unknown Source)
> 	at org.apache.derby.impl.load.ImportReadData.readNextRow(Unknown Source)
> 	at org.apache.derby.impl.load.ImportAbstract.next(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.VTIResultSet.getNextRowCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.getNextRowCore(Unknown
Source)
> 	at org.apache.derby.impl.sql.execute.NormalizeResultSet.getNextRowCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.NoPutResultSetImpl.getNextRowFromRowSource(Unknown
Source)
> 	at org.apache.derby.impl.store.access.heap.HeapController.load(Unknown Source)
> 	at org.apache.derby.impl.store.access.heap.Heap.load(Unknown Source)
> 	at org.apache.derby.impl.store.access.RAMTransaction.loadConglomerate(Unknown Source)
> 	at org.apache.derby.impl.store.access.RAMTransaction.recreateAndLoadConglomerate(Unknown
Source)
> 	at org.apache.derby.impl.sql.execute.InsertResultSet.bulkInsertCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.InsertResultSet.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeLargeUpdate(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeUpdate(Unknown Source)
> 	at org.apache.derby.impl.load.Import.performImport(Unknown Source)
> 	at org.apache.derby.impl.load.Import.importData(Unknown Source)
> 	at org.apache.derby.catalog.SystemProcedures.SYSCS_IMPORT_DATA(Unknown Source)
> 	at org.apache.derby.exe.ace3c78554x013fxcb2cx4da6x00000f7e08680.g0(Unknown Source)
> 	at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:601)
> 	at org.apache.derby.impl.services.reflect.ReflectMethod.invoke(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.CallStatementResultSet.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)

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