JR65079: IIDR GETS HUNG DURING HOL CONDITION AND INSTANCE TRACES WILL BE FLOODED WITH EVENT MESSAGES.

APAR status

• Closed as program error.

Error description

• When hitting the Head of Log (HOL) issue. Where CDC is faster in
  reading the logs, CDC for MySQL repeats the following message
  and gets hung.
  
  2022-06-01 19:17:36.750 SHAREDSCRAPE LOG READER{132}
  com.datamirror.ts.scrapers.mysqlscraper.BinaryFileInputStream
  getNextEventFromBuffer() Current event length is greater then
  the bytes read hence reading event again form binary log,
  printing the values, Current Event Length : 1315452275,Buffer
  capacity : 1315452275,Bytes read was: 376
  NextEventPositionOffset :323538739
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * This issue might affect you if you are using IDR             *
  * 11.4.0.4-5644 or older for MySQL source                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Mirroring stalls.                                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to IDR 11.4.0.4-5652 or newer for MySQL source       *
  ****************************************************************
  

Problem conclusion

• Upgrading to IDR 11.4.0.4-5652 or newer for MySQL source
  resolves the issue.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  IDR CDC MYSQL

• Fixed component ID

  5725E30MY

Applicable component levels