Selvaganesan Govindarajan created TRAFODION-2853:
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Summary: Memory leak of ComDiagsArea in Context
Key: TRAFODION-2853
URL: https://issues.apache.org/jira/browse/TRAFODION-2853
Project: Apache Trafodion
Issue Type: Bug
Components: sql-exe
Affects Versions: any
Reporter: Selvaganesan Govindarajan
Assignee: Selvaganesan Govindarajan
Fix For: 2.3-incubating
There were instances that the executor master process has more than 1 GB of
memory account memory allocated, Looking at the size of allocation by
traversing the heap, it was found ComDiagsArea is leaked in ContextHeap.
The heap traversal shows the addresses and the allocated size that were part of
context Heap that was leaking
0x7fdef4cc69b8 336
0x7fdef4cc6bc8 336
0x7fdef4cc6d18 336
0x7fdef4cc6e68 336
0x7fdef4cc6fb8 336
0x7fdef4cc71e0 336
0x7fdef4cc7330 336
0x7fdef4cc7480 336
The actual address of the objects is 16 bytes from the above address
(gdb) p *(ComDiagsArea *)0x7fdef4cc69c8
$9 = {
<IpcMessageObj> = {
_vptr.IpcMessageObj = 0x7fdfbe4bbc50,
s_ = {
objType_ = 13501,
objVersion_ = 0,
refCount_ = 1,
objLength_ = 0,
next_ = 0x0,
endianness_ = 1 '\001',
spare1_ = 0 '\000',
spare2_ = 0,
vPtrPad_ = 0x0
}
},
members of ComDiagsArea:
collHeapPtr_ = 0x7fdfb18eb128,
errors_ = {
<NACollection<ComDiagsArea::DiagsCondition*>> = {
<NABasicObject> = {
_vptr.NABasicObject = 0x7fdfbe4bbf10,
h_ = 0x0
},
members of NACollection<ComDiagsArea::DiagsCondition*>:
maxLength_ = 0,
usedLength_ = 0,
entries_ = 0,
arr_ = 0x0,
usages_ = 0x0,
heap_ = 0x7fdfb18eb128
},
members of NAList<ComDiagsArea::DiagsCondition*>:
first_ = 111111111,
last_ = 111111111,
userIndexCache_ = 111111111,
arrayIndexCache_ = 111111111
},
warnings_ = {
---Type <return> to continue, or q <return> to quit---
<NACollection<ComDiagsArea::DiagsCondition*>> = {
<NABasicObject> = {
_vptr.NABasicObject = 0x7fdfbe4bbf10,
h_ = 0x0
},
members of NACollection<ComDiagsArea::DiagsCondition*>:
maxLength_ = 0,
usedLength_ = 0,
entries_ = 0,
arr_ = 0x0,
usages_ = 0x0,
heap_ = 0x7fdfb18eb128
},
members of NAList<ComDiagsArea::DiagsCondition*>:
first_ = 111111111,
last_ = 111111111,
userIndexCache_ = 111111111,
arrayIndexCache_ = 111111111
},
newCondition_ = 0x0,
areMore_ = 0,
lengthLimit_ = 30,
rowCount_ = 0,
theSQLFunction_ = 0,
maxDiagsId_ = 0,
avgStreamWaitTime_ = -1,
cost_ = 0,
flags_ = 0,
rowsetRowCountArray_ = 0x0,
fillers_ = '\000' <repeats 59 times>
}
(gdb) (gdb) p *(NAHeap *)0x7fdfb18eb128
$10 = {
<NAMemory> = {
<NABasicObject> = {
_vptr.NABasicObject = 0x7fdfc1001870,
h_ = 0x0
},
members of NAMemory:
name_ = "Heap in ContextCli\000\000",
type_ = NAMemory::DERIVED_MEMORY,
initialSize_ = 524288,
maximumSize_ = 18446744073709551615,
incrementSize_ = 4194304,
parent_ = 0xf18b38,
firstBlk_ = 0x7f3a44f75030,
allocSize_ = 1375405192,
upperLimit_ = 0,
highWaterMark_ = 1447646816,
intervalWaterMark_ = 1447646816,
allocCnt_ = 2837663,
totalSize_ = 1529356096,
blockCnt_ = 381,
thBlockCnt_ = 40,
segGlobals_ = 0x0,
memoryList_ = 0x7fdfb0e7aac0,
lastListEntry_ = 0x7fdeef140608,
nextEntry_ = 0x7fdfb18f12c8,
debugLevel_ = 0,
heapJumpBuf_ = 0xf18a30,
exhaustedMem_ = 0,
errorsMask_ = 0,
heapID_ = {
heapNum = -1
},
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