our message content as below : {"dataType":"exception","appId":"1001","channelId":"appStore","version":"1.9.3","extra":"","ts":"2013-06-17 15:23:53"," deviceId":"c2605371b2b566958aa1e341cc60657dda3ccb44","stacktrace":"=============异常崩溃报告=============&&name:&&CALayerInvalidGeomet ry&&reason:&&CALayer position contains NaN: [3.32887e-09 nan]&&callStackSymbols:&&0 CoreFoundation 0x326f93ff < redacted> 186&&1 libobjc.A.dylib 0x3a3f4963 objc_exception_throw 30&&2 CoreFoundation 0x326f9307 <redacted> 106&&3 QuartzCore 0x342b610b <redacted> 210&&4 QuartzCore 0x342b6033 <redacted> 50&&5 QuartzCore 0x342b5fc7 <redacted> 558&&6 UIKit 0x34509bd7 <redacted> 234&&7 UIKit 0x34509901 <redacted> 184&&8 UIKit 0x3450983f <redacted> 46&&9 测试测试 0x0016877b -[SGOfficerView setArmorWithXMLId:level:withTag :withdurability:skillXml:] 3002&&10 测试测试 0x0016e055 -[SGOfficerChangeEquipViewController tap:] 5508&&1 1 测试测试 0x0018ed97 -[SGTipMessageView touchesEnded:withEvent:] 158&&12 测试测试 0 x0012713f -[SGEquipView touchesEnded:withEvent:] 66&&13 UIKit 0x34511471 <redacted> 5680&&14 CoreF oundation 0x326ce941 <redacted> 20&&15 CoreFoundation 0x326ccc39 <redacted> 276&&16 Co reFoundation 0x326ccf93 <redacted> 746&&17 CoreFoundation 0x3264023d CFRunLoopRunSpecific 356&&18 CoreFoundation 0x326400c9 CFRunLoopRunInMode 104&&19 GraphicsServices 0x3621f33 b GSEventRunModal 74&&20 UIKit 0x3455c2b9 UIApplicationMain 1120&&21 测试测试 0x001c771f main 74&&22 测试测试 0x00059904 start 40","platType":"ios"}
---------------------------------------------------------------------------------------------------------- when commit the message to kafka service , kafka remove the topic directory unexpectedly and throw "can't find the topic dir" error. is there some content in the message will cause this ? and how to avoid this issue ? thanks very in advance ! -- 不学习,不知道