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https://issues.apache.org/jira/browse/TRAFODION-2853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16397709#comment-16397709
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ASF GitHub Bot commented on TRAFODION-2853:
-------------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/trafodion/pull/1470
> 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
> Priority: Major
> Fix For: 2.3
>
>
> There were instances that the executor master process has more than 1 GB of
> memory of SQL accounted memory allocated, Looking at the size of allocation
> by traversing the heap, it was found that ComDiagsArea is leaking 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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