[AMQ-8040] KahaDB: PageFile - Unexpected io error on pagefile write NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.16.0
• Fix Version/s: 5.17.0
• Component/s: KahaDB
• Assignee: Gary Tully
• Reporter: Gary Tully
• Created: 11/Sep/20 15:57
• Updated: 11/Sep/20 16:10
• Resolved: 11/Sep/20 16:10

Description

With:

<kahaDB ... enableIndexWriteAsync="true" /> 

A large transaction write with pages disk bound can be modified with an update leading to a NPE of the form:

[aDB Page Writer] - INFO  PageFile  - Unexpected io error on pagefile write of 4000 pages.
[aDB Page Writer] - INFO  PageFile  - Unexpected io error on pagefile write of 4000 pages.
java.io.IOException: Cannot create recovery file. Reason: java.lang.NullPointerException at org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:28) at org.apache.activemq.store.kahadb.disk.page.PageFile.writeBatch(PageFile.java:1163) at org.apache.activemq.store.kahadb.disk.page.PageFile.pollWrites(PageFile.java:1117) at org.apache.activemq.store.kahadb.disk.page.PageFile.access$300(PageFile.java:68) at org.apache.activemq.store.kahadb.disk.page.PageFile$3.run(PageFile.java:1323)Caused by: java.lang.NullPointerException at java.util.zip.Adler32.update(Adler32.java:73) at org.apache.activemq.store.kahadb.disk.page.PageFile.writeBatch(PageFile.java:1161)
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