[CAY-1124] DataRowStore blocked

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0
• Fix Version/s: 3.1B1
• Component/s: Core Library
• Environment: 3.0M3
• Assignee: Tore Halset
• Reporter: Tore Halset
• Created: 15/Oct/08 19:17
• Updated: 22/Feb/12 18:56
• Resolved: 22/Feb/12 18:56

Description

I have gotten this one a couple of times on our production system running 3.0M3. As far as I see, this code has not been improved since 3.0M3, so I register this as a major bug.

"TP-Processor5" daemon prio=10 tid=0x00002aab798c0400 nid=0xc2e waiting for monitor entry [0x0000000043e64000..0x000000
0043e66bb0]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.cayenne.access.DataRowStore.getCachedSnapshot(DataRowStore.java:351)

• waiting to lock <0x00002aaab91a5c40> (a org.apache.cayenne.access.DataRowStore)
  at org.apache.cayenne.access.DataDomainQueryAction.interceptOIDQuery(DataDomainQueryAction.java:174)
  at org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:114)
  at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:740)
  at org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:296)
  at org.apache.cayenne.util.ObjectContextQueryAction.execute(ObjectContextQueryAction.java:84)
  at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1331)
  at org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1320)
  at org.apache.cayenne.DataObjectUtils.objectForQuery(DataObjectUtils.java:275)
  at org.apache.cayenne.DataObjectUtils.objectForPK(DataObjectUtils.java:261)
  at org.apache.cayenne.DataObjectUtils.objectForPK(DataObjectUtils.java:172)

"DefaultQuartzScheduler_Worker-10" prio=10 tid=0x00002aab7afedc00 nid=0xc20 waiting for monitor entry [0x0000000043a62000..0x0000000043a62db0]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.cayenne.access.DataRowStore.getCachedSnapshot(DataRowStore.java:351)

• waiting to lock <0x00002aaab91a5c40> (a org.apache.cayenne.access.DataRowStore)
  at org.apache.cayenne.access.DataDomainQueryAction.interceptOIDQuery(DataDomainQueryAction.java:174)
  at org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:114)
  at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:740)
  at org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:296)
  at org.apache.cayenne.util.ObjectContextQueryAction.execute(ObjectContextQueryAction.java:84)
  at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1331)
  at org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1320)
  at org.apache.cayenne.DataObjectUtils.objectForQuery(DataObjectUtils.java:275)
  at org.apache.cayenne.DataObjectUtils.objectForPK(DataObjectUtils.java:261)
  at org.apache.cayenne.DataObjectUtils.objectForPK(DataObjectUtils.java:172)

"DefaultQuartzScheduler_Worker-3" prio=10 tid=0x00002aab7af02c00 nid=0xc19 waiting for monitor entry [0x000000004335b000..0x000000004335be30]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.cayenne.access.DataRowStore.snapshotsUpdatedForObjects(DataRowStore.java:234)

• waiting to lock <0x00002aaab91a5c40> (a org.apache.cayenne.access.DataRowStore)
  at org.apache.cayenne.access.ObjectResolver.objectsFromDataRows(ObjectResolver.java:125)
  at org.apache.cayenne.access.ObjectResolver.synchronizedObjectsFromDataRows(ObjectResolver.java:101)
• locked <0x00002aaabb39bb70> (a org.apache.cayenne.access.ObjectStore)
  at org.apache.cayenne.access.DataDomainQueryAction.interceptObjectConversion(DataDomainQueryAction.java:460)
  at org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:129)
  at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:740)
  at org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:296)
  at org.apache.cayenne.util.ObjectContextQueryAction.execute(ObjectContextQueryAction.java:84)
  at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1331)
  at org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1320)

Issue Links

• relates to: CAY-1670 Non-blocking DataRowStore