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Bug 347747

Summary:

To much null objects in HashMap

Product:

z_Archived

Reporter:

Jan Lerby <lerby84>

Component:

BIRT

Assignee:

Xuelan Li <xuelan.li>

Status:

RESOLVED FIXED

QA Contact:

Xiaoying Gu <bluesoldier>

Severity:

critical

Priority:

CC:

bluesoldier

Version:

unspecified

Target Milestone:

3.7.1

Hardware:

OS:

All

Whiteboard:

Attachments:

Description	Flags
Excerpt a typical HashMap	none

Description Jan Lerby

2011-05-31 05:18:36 EDT

Build Identifier: 20110218-0911

Hi,

we had memory problems with BIRT 2.6.2 and look for reason. During searching we have noticed that BIRT makes MANY HashMaps of report objects. The point of this bug is HashMaps have default size 16 items. Even if all items are null. And it contributes to consuming memory to crash.
I think better is to set size HashMap for 3 items. In most cases HashMap has 0 or 1 item. Less common is 2 or 3 items. And more than 3 items it is rarely.
I am adding picture of typical HashMap object.
HashMap is created in org.eclipse.birt.report.model.core.DesignElement for field propValues
protected Map<String, Object> propValues = new HashMap<String, Object>( );



Reproducible: Always

Comment 1 Jan Lerby

2011-05-31 05:19:32 EDT

Created attachment 196969 [details]
Excerpt a typical HashMap

Comment 2 Xuelan Li

2011-06-10 04:15:04 EDT

fixed.