Dead lock in subreports

[2002 JI Open Discussion]

By: Yuriy Morgunov - yuriy_morgunov

Dead lock in subreports

2003-10-02 02:01

Hi,

 

The same master and subreports as in the last topic "Infinite loop creating new page in subreports" from 2003-10-02 08:44 cause dead lock situation in case other input data provided. The thread dump looks like this:

 

"main" prio=5 tid=0x00234930 nid=0x340 in Object.wait() [6f000..6fc40]

at java.lang.Object.wait(Native Method)

- waiting on <02C2E9F8> (a dori.jasper.engine.fill.JRHorizontalFiller)

at java.lang.Object.wait(Object.java:426)

at dori.jasper.engine.fill.JRFillSubreport.prepare(JRFillSubreport.java:496)

- locked <02C2E9F8> (a dori.jasper.engine.fill.JRHorizontalFiller)

at dori.jasper.engine.fill.JRFillBand.prepareElements(JRFillBand.java:562)

at dori.jasper.engine.fill.JRFillBand.fill(JRFillBand.java:479)

at dori.jasper.engine.fill.JRFillBand.fill(JRFillBand.java:450)

at dori.jasper.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1148)

at dori.jasper.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:649)

at dori.jasper.engine.fill.JRVerticalFiller.fillReportContent(JRVerticalFiller.java:295)

at dori.jasper.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:186)

- locked <03C7B658> (a dori.jasper.engine.fill.JRVerticalFiller)

at dori.jasper.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:524)

at dori.jasper.engine.fill.JRFiller.fillReport(JRFiller.java:159)

at dori.jasper.engine.JasperFillManager.fillReport(JasperFillManager.java:350)

 

Has anyone any idea to fix this problem??

Yuriy.

 

 

 

 

By: Teodor Danciu - teodord

RE: Dead lock in subreports

2004-01-09 14:01

 

Hi,

 

Have you placed the subreport inside a band with

isSplitAllowed="false"?

 

Thank you,

Teodor

[bothfeld]

We ran into the same problem and isSplitAllowed=false didn't solve our problem.

We found out that iReport does not give a warning when the band height of the sub report is too large to fit into the embedding master report. Just decrease the height and the hanging thread disappears. We could reproduce this behaviour: when exceeding the height by a certain amount, the preview fails as the unit test does.

 

Kay