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https://issues.apache.org/jira/browse/HAWQ-1487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ruilong Huo closed HAWQ-1487.
-----------------------------
> hang process due to deadlock when it try to process interrupt in error
> handling
> -------------------------------------------------------------------------------
>
> Key: HAWQ-1487
> URL: https://issues.apache.org/jira/browse/HAWQ-1487
> Project: Apache HAWQ
> Issue Type: Bug
> Components: Query Execution
> Affects Versions: 2.2.0.0-incubating
> Reporter: Ruilong Huo
> Assignee: Ruilong Huo
> Fix For: 2.3.0.0-incubating
>
>
> It has hang process when it try to process interrupt in error handling. To be
> specific, some QE encounter division by zero error, and then it error out.
> During the error processing, it try to handle query cancelling interrupt and
> thus deadlock occur.
> The hang process is:
> {noformat}
> $ hawq ssh -f hostfile -e "ps -ef | grep postgres | grep -v grep"
> gpadmin 51246 51245 0 06:15 ? 00:00:01 postgres: port 20100,
> logger p
> gpadmin 51249 51245 0 06:15 ? 00:00:00 postgres: port 20100, stats
> co
> gpadmin 51250 51245 0 06:15 ? 00:00:07 postgres: port 20100,
> writer p
> gpadmin 51251 51245 0 06:15 ? 00:00:01 postgres: port 20100,
> checkpoi
> gpadmin 51252 51245 0 06:15 ? 00:00:11 postgres: port 20100,
> segment
> gpadmin 182983 51245 0 07:00 ? 00:00:03 postgres: port 20100,
> hawqsupe
> $ ps -ef | grep postgres | grep -v grep
> gpadmin 51245 1 0 06:15 ? 00:01:01
> /usr/local/hawq_2_2_0_0/bin/postgres -D
> /data/pulse-agent-data/HAWQ-main-FeatureTest-opt-Multinode-parallel/product/segmentdd
> -i -M segment -p 20100 --silent-mode=true
> gpadmin 51246 51245 0 06:15 ? 00:00:01 postgres: port 20100,
> logger process
> gpadmin 51249 51245 0 06:15 ? 00:00:00 postgres: port 20100, stats
> collector process
> gpadmin 51250 51245 0 06:15 ? 00:00:07 postgres: port 20100,
> writer process
> gpadmin 51251 51245 0 06:15 ? 00:00:01 postgres: port 20100,
> checkpoint process
> gpadmin 51252 51245 0 06:15 ? 00:00:11 postgres: port 20100,
> segment resource manager
> gpadmin 182983 51245 0 07:00 ? 00:00:03 postgres: port 20100,
> hawqsuperuser olap_winow... 10.32.34.225(45462) con4405 seg0 cmd2 slice7
> MPPEXEC SELECT
> gpadmin 194424 194402 0 23:50 pts/0 00:00:00 grep postgres
> {noformat}
> The call stack is:
> {noformat}
> $ sudo gdb -p 182983
> (gdb) bt
> #0 0x0000003ff060e2e4 in __lll_lock_wait () from /lib64/libpthread.so.0
> #1 0x0000003ff0609588 in _L_lock_854 () from /lib64/libpthread.so.0
> #2 0x0000003ff0609457 in pthread_mutex_lock () from /lib64/libpthread.so.0
> #3 0x0000003ff221206a in _Unwind_Find_FDE () from /lib64/libgcc_s.so.1
> #4 0x0000003ff220f603 in ?? () from /lib64/libgcc_s.so.1
> #5 0x0000003ff220ff49 in ?? () from /lib64/libgcc_s.so.1
> #6 0x0000003ff22100e7 in _Unwind_Backtrace () from /lib64/libgcc_s.so.1
> #7 0x0000003ff02fe966 in backtrace () from /lib64/libc.so.6
> #8 0x00000000009cda3f in errstart (elevel=20, filename=0xd309e0
> "postgres.c", lineno=3618,
> funcname=0xd32fc0 "ProcessInterrupts", domain=0x0) at elog.c:492
> #9 0x00000000008e8fcb in ProcessInterrupts () at postgres.c:3616
> #10 0x00000000008e8c9e in StatementCancelHandler (postgres_signal_arg=2) at
> postgres.c:3463
> #11 <signal handler called>
> #12 0x0000003ff0609451 in pthread_mutex_lock () from /lib64/libpthread.so.0
> #13 0x0000003ff221206a in _Unwind_Find_FDE () from /lib64/libgcc_s.so.1
> #14 0x0000003ff220f603 in ?? () from /lib64/libgcc_s.so.1
> #15 0x0000003ff2210119 in _Unwind_Backtrace () from /lib64/libgcc_s.so.1
> #16 0x0000003ff02fe966 in backtrace () from /lib64/libc.so.6
> #17 0x00000000009cda3f in errstart (elevel=20, filename=0xd3ba00 "float.c",
> lineno=839, funcname=0xd3bf3a "float8div",
> domain=0x0) at elog.c:492
> #18 0x0000000000921a84 in float8div (fcinfo=0x7ffd04d2b8b0) at float.c:836
> #19 0x0000000000722fe5 in ExecMakeFunctionResult (fcache=0x324a088,
> econtext=0x32495d8, isNull=0x7ffd04d2c0e0 "\030",
> isDone=0x7ffd04d2bd04) at execQual.c:1762
> #20 0x0000000000723d87 in ExecEvalOper (fcache=0x324a088, econtext=0x32495d8,
> isNull=0x7ffd04d2c0e0 "\030",
> isDone=0x7ffd04d2bd04) at execQual.c:2250
> #21 0x0000000000722451 in ExecEvalFuncArgs (fcinfo=0x7ffd04d2bda0,
> argList=0x324b378, econtext=0x32495d8) at execQual.c:1317
> #22 0x0000000000722a68 in ExecMakeFunctionResult (fcache=0x3249850,
> econtext=0x32495d8,
> isNull=0x7ffd04d2c5c1 "\306\322\004\375\177", isDone=0x0) at
> execQual.c:1532
> #23 0x0000000000723d1e in ExecEvalFunc (fcache=0x3249850, econtext=0x32495d8,
> isNull=0x7ffd04d2c5c1 "\306\322\004\375\177",
> isDone=0x0) at execQual.c:2228
> #24 0x000000000076eed2 in initFcinfo (wrxstate=0x31b8fe0,
> fcinfo=0x7ffd04d2c280, funcstate=0x7f83c7412318, econtext=0x32495d8,
> check_nulls=1 '\001') at nodeWindow.c:3201
> #25 0x000000000076efa4 in add_tuple_to_trans (funcstate=0x7f83c7412318,
> wstate=0x3248ab8, econtext=0x32495d8,
> check_nulls=1 '\001') at nodeWindow.c:3223
> #26 0x0000000000772f72 in processTupleSlot (wstate=0x3248ab8, slot=0x31ac150,
> last_peer=0 '\000') at nodeWindow.c:5105
> #27 0x0000000000772760 in ExecWindow (wstate=0x3248ab8) at nodeWindow.c:4821
> ---Type <return> to continue, or q <return> to quit---
> #28 0x000000000071eda7 in ExecProcNode (node=0x3248ab8) at execProcnode.c:1007
> #29 0x000000000075aded in NextInputSlot (node=0x31af928) at nodeResult.c:95
> #30 0x000000000075afba in ExecResult (node=0x31af928) at nodeResult.c:194
> #31 0x000000000071eb64 in ExecProcNode (node=0x31af928) at execProcnode.c:891
> #32 0x000000000075aded in NextInputSlot (node=0x31ae608) at nodeResult.c:95
> #33 0x000000000075afba in ExecResult (node=0x31ae608) at nodeResult.c:194
> #34 0x000000000071eb64 in ExecProcNode (node=0x31ae608) at execProcnode.c:891
> #35 0x00000000007574e1 in execMotionSender (node=0x31adf80) at
> nodeMotion.c:364
> #36 0x00000000007573cf in ExecMotion (node=0x31adf80) at nodeMotion.c:331
> #37 0x000000000071ed80 in ExecProcNode (node=0x31adf80) at execProcnode.c:999
> #38 0x00000000007180fc in ExecutePlan (estate=0x31b70d8, planstate=0x31adf80,
> operation=CMD_SELECT, numberTuples=0,
> direction=ForwardScanDirection, dest=0x7f83c74609f0) at execMain.c:3199
> #39 0x0000000000714450 in ExecutorRun (queryDesc=0x31c0c40,
> direction=ForwardScanDirection, count=0) at execMain.c:1197
> #40 0x00000000008f0b5b in PortalRunSelect (portal=0x31ba158, forward=1
> '\001', count=0, dest=0x7f83c74609f0) at pquery.c:1730
> #41 0x00000000008f073b in PortalRun (portal=0x31ba158,
> count=9223372036854775807, isTopLevel=1 '\001', dest=0x7f83c74609f0,
> altdest=0x7f83c74609f0, completionTag=0x7ffd04d2d000 "") at pquery.c:1552
> #42 0x00000000008e5878 in exec_mpp_query (
> query_string=0x31edeca "SELECT sale.vn,sale.qty,sale.qty,
> TO_CHAR(COALESCE(REGR_AVGY(floor(sale.vn*sale.vn),floor(sale.prc+sale.pn))
> OVER(win1),0),'99999999.9999999'),sale.dt,\nTO_CHAR(COALESCE(MIN(floor(sale.qty))
> OVER(win1)"...,
> serializedQuerytree=0x0, serializedQuerytreelen=0,
> serializedPlantree=0x31ee32f "P{", serializedPlantreelen=4076,
> serializedParams=0x0, serializedParamslen=0,
> serializedSliceInfo=0x31ef31b "a\020", serializedSliceInfolen=1057,
> serializedResource=0x31ef78a "\260", serializedResourceLen=50,
> seqServerHost=0x31ef7bc "10.32.34.225", seqServerPort=19765,
> localSlice=7) at postgres.c:1487
> #43 0x00000000008eb6b8 in PostgresMain (argc=270, argv=0x3060678,
> username=0x303a938 "hawqsuperuser") at postgres.c:5080
> #44 0x00000000008947f7 in BackendRun (port=0x300b5f0) at postmaster.c:5915
> #45 0x0000000000893c16 in BackendStartup (port=0x300b5f0) at postmaster.c:5484
> #46 0x000000000088dc92 in ServerLoop () at postmaster.c:2163
> #47 0x000000000088cc9f in PostmasterMain (argc=9, argv=0x3013d10) at
> postmaster.c:1454
> #48 0x00000000007aa05b in main (argc=9, argv=0x3013d10) at main.c:226
> {noformat}
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