のVerticaは致命的なシグナルSIGSEGV私のVerticaクラスタノードダウンの

Question

一つを受信し、ログファイルで見つかった：

2016-03-19 20:01:55.263 Init Session:0x7f3420013970-b00000000a70ab [EE]  <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.263 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.266 nameless:0x7f325accb730 [Main] <INFO> Handling signal: 11 
    2016-03-19 20:01:55.291 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.291 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.293 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.293 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.295 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.295 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.296 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.296 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.298 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> SortManager found maxMerges 7 too small(38 MB Assigned). 
    2016-03-19 20:01:55.298 Init Session:0x7f3420013970-b00000000a70ab [EE] <INFO> After disabling optimization, maxMerges becomes 7. 
    2016-03-19 20:01:55.305 EEThread:0x7f307fab12c0-c0000000099401 [EE] <INFO> Running ROS from sort buffer. Merge chunks = 1, merges per batch = 36 
    2016-03-19 20:01:55.305 EEThread:0x7f3379799f10-c0000000099401 [EE] <INFO> Running ROS from sort buffer. Merge chunks = 1, merges per batch = 36 
    2016-03-19 20:01:55.305 EEThread:0x7f2fb3edbea0-c0000000099401 [EE] <INFO> Running ROS from sort buffer. Merge chunks = 1, merges per batch = 36 
    2016-03-19 20:01:55.306 EEThread:0x7f307fab12c0-c0000000099401 [EE] <INFO> Finished writing one ROS at 0.00 sec. Write cost 0.00 sec, including compress pipe wait 0.00 sec 
    2016-03-19 20:01:55.306 EEThread:0x7f3379799f10-c0000000099401 [EE] <INFO> Finished writing one ROS at 0.00 sec. Write cost 0.00 sec, including compress pipe wait 0.00 sec 
    2016-03-19 20:01:55.307 EEThread:0x7f2fb3edbea0-c0000000099401 [EE] <INFO> Finished writing one ROS at 0.00 sec. Write cost 0.00 sec, including compress pipe wait 0.00 sec 
    2016-03-19 20:01:55.308 EEThread:0x7f307fab12c0-c0000000099401 [EE] <INFO> Finished writing ROSes from sort buffer. 
    2016-03-19 20:01:55.309 EEThread:0x7f3379799f10-c0000000099401 [EE] <INFO> Finished writing ROSes from sort buffer. 
    2016-03-19 20:01:55.309 EEThread:0x7f2fb3edbea0-c0000000099401 [EE] <INFO> Finished writing ROSes from sort buffer. 
    2016-03-19 20:01:56.780 nameless:0x7f325accb730 [Main] <PANIC> Received fatal signal SIGSEGV. 
    2016-03-19 20:01:56.780 nameless:0x7f325accb730 [Main] <PANIC> Info: si_code: 128, si_pid: 0, si_uid: 0, si_addr: (nil) 

ErrorReport.txt

を

BEGIN BACKTRACE 
Vertica Backtrace at Sat Mar 19 20:01:55 2016 
------------------------- 
Vertica Analytic Database v7.2.1-0 $BrandId$ 
vertica(v7.2.1-0) built by jeeves@build-centos6 from releases/VER_7_2_RELEASE_BUILD_1_0_20151116@177918 on 'Mon Nov 16 16:59:07 2015' $BuildId$ 
00400000-0485f000 r-xp 00000000 fc:03 52166764       /opt/vertica/bin/vertica 
0485f000-07020000 rw-p 0445f000 fc:03 52166764       /opt/vertica/bin/vertica 
07020000-07139000 rw-p 00000000 00:00 0 
08931000-08e42000 rw-p 00000000 00:00 0         [heap] 
7f34c7538000-7f34c7801000 r--p 00000000 fc:03 8650892     /usr/lib/locale/locale-archive 
7f34c7801000-7f34c8746000 r--s 00000000 fc:03 52168242     /opt/vertica/share/icu/icudt42l.dat 
7f34c8746000-7f34c8751000 r-xp 00000000 fc:03 28573925     /lib/x86_64-linux-gnu/libnss_files-2.19.so 
7f34c8751000-7f34c8950000 ---p 0000b000 fc:03 28573925     /lib/x86_64-linux-gnu/libnss_files-2.19.so 
7f34c8950000-7f34c8951000 r--p 0000a000 fc:03 28573925     /lib/x86_64-linux-gnu/libnss_files-2.19.so 
7f34c8951000-7f34c8952000 rw-p 0000b000 fc:03 28573925     /lib/x86_64-linux-gnu/libnss_files-2.19.so 
7f34c8952000-7f34c895d000 r-xp 00000000 fc:03 28573915     /lib/x86_64-linux-gnu/libnss_nis-2.19.so 
7f34c895d000-7f34c8b5c000 ---p 0000b000 fc:03 28573915     /lib/x86_64-linux-gnu/libnss_nis-2.19.so 
7f34c8b5c000-7f34c8b5d000 r--p 0000a000 fc:03 28573915     /lib/x86_64-linux-gnu/libnss_nis-2.19.so 
7f34c8b5d000-7f34c8b5e000 rw-p 0000b000 fc:03 28573915     /lib/x86_64-linux-gnu/libnss_nis-2.19.so 
7f34c8b5e000-7f34c8b75000 r-xp 00000000 fc:03 28573909     /lib/x86_64-linux-gnu/libnsl-2.19.so 
7f34c8b75000-7f34c8d74000 ---p 00017000 fc:03 28573909     /lib/x86_64-linux-gnu/libnsl-2.19.so 
7f34c8d74000-7f34c8d75000 r--p 00016000 fc:03 28573909     /lib/x86_64-linux-gnu/libnsl-2.19.so 
7f34c8d75000-7f34c8d76000 rw-p 00017000 fc:03 28573909     /lib/x86_64-linux-gnu/libnsl-2.19.so 
7f34c8d76000-7f34c8d78000 rw-p 00000000 00:00 0 
7f34c8d78000-7f34c8d81000 r-xp 00000000 fc:03 28573908     /lib/x86_64-linux-gnu/libnss_compat-2.19.so 
7f34c8d81000-7f34c8f80000 ---p 00009000 fc:03 28573908     /lib/x86_64-linux-gnu/libnss_compat-2.19.so 
7f34c8f80000-7f34c8f81000 r--p 00008000 fc:03 28573908     /lib/x86_64-linux-gnu/libnss_compat-2.19.so 
7f34c8f81000-7f34c8f82000 rw-p 00009000 fc:03 28573908     /lib/x86_64-linux-gnu/libnss_compat-2.19.so 
7f34c8f82000-7f34c9384000 rw-p 00000000 00:00 0 
7f34c9384000-7f34d9524000 rw-p 00000000 00:00 0 
7f34d9524000-7f34d9725000 rw-p 00000000 00:00 0 
7f34d9725000-7f34d974a000 r-xp 00000000 fc:03 28573816     /lib/x86_64-linux-gnu/libtinfo.so.5.9 
7f34d974a000-7f34d9949000 ---p 00025000 fc:03 28573816     /lib/x86_64-linux-gnu/libtinfo.so.5.9 
7f34d9949000-7f34d994d000 r--p 00024000 fc:03 28573816     /lib/x86_64-linux-gnu/libtinfo.so.5.9 
7f34d994d000-7f34d994e000 rw-p 00028000 fc:03 28573816     /lib/x86_64-linux-gnu/libtinfo.so.5.9 
7f34d994e000-7f34d9964000 r-xp 00000000 fc:03 28573714     /lib/x86_64-linux-gnu/libgcc_s.so.1 
7f34d9964000-7f34d9b63000 ---p 00016000 fc:03 28573714     /lib/x86_64-linux-gnu/libgcc_s.so.1 
7f34d9b63000-7f34d9b64000 rw-p 00015000 fc:03 28573714     /lib/x86_64-linux-gnu/libgcc_s.so.1 
7f34d9b64000-7f34d9b7d000 r-xp 00000000 fc:03 28573910     /lib/x86_64-linux-gnu/libpthread-2.19.so 
7f34d9b7d000-7f34d9d7c000 ---p 00019000 fc:03 28573910     /lib/x86_64-linux-gnu/libpthread-2.19.so 
7f34d9d7c000-7f34d9d7d000 r--p 00018000 fc:03 28573910     /lib/x86_64-linux-gnu/libpthread-2.19.so 
7f34d9d7d000-7f34d9d7e000 rw-p 00019000 fc:03 28573910     /lib/x86_64-linux-gnu/libpthread-2.19.so 
7f34d9d7e000-7f34d9d82000 rw-p 00000000 00:00 0 
7f34d9d82000-7f34d9d85000 r-xp 00000000 fc:03 28573904     /lib/x86_64-linux-gnu/libdl-2.19.so 
7f34d9d85000-7f34d9f84000 ---p 00003000 fc:03 28573904     /lib/x86_64-linux-gnu/libdl-2.19.so 
7f34d9f84000-7f34d9f85000 r--p 00002000 fc:03 28573904     /lib/x86_64-linux-gnu/libdl-2.19.so 
7f34d9f85000-7f34d9f86000 rw-p 00003000 fc:03 28573904     /lib/x86_64-linux-gnu/libdl-2.19.so 
7f34d9f86000-7f34da141000 r-xp 00000000 fc:03 28573922     /lib/x86_64-linux-gnu/libc-2.19.so 
7f34da141000-7f34da340000 ---p 001bb000 fc:03 28573922     /lib/x86_64-linux-gnu/libc-2.19.so 
7f34da340000-7f34da344000 r--p 001ba000 fc:03 28573922     /lib/x86_64-linux-gnu/libc-2.19.so 
7f34da344000-7f34da346000 rw-p 001be000 fc:03 28573922     /lib/x86_64-linux-gnu/libc-2.19.so 
7f34da346000-7f34da34b000 rw-p 00000000 00:00 0 
7f34da34b000-7f34da352000 r-xp 00000000 fc:03 28573920     /lib/x86_64-linux-gnu/librt-2.19.so 
7f34da352000-7f34da551000 ---p 00007000 fc:03 28573920     /lib/x86_64-linux-gnu/librt-2.19.so 
7f34da551000-7f34da552000 r--p 00006000 fc:03 28573920     /lib/x86_64-linux-gnu/librt-2.19.so 
7f34da552000-7f34da553000 rw-p 00007000 fc:03 28573920     /lib/x86_64-linux-gnu/librt-2.19.so 
7f34da553000-7f34da639000 r-xp 00000000 fc:03 8652997     /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19 
7f34da639000-7f34da838000 ---p 000e6000 fc:03 8652997     /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19 
7f34da838000-7f34da840000 r--p 000e5000 fc:03 8652997     /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19 
7f34da840000-7f34da842000 rw-p 000ed000 fc:03 8652997     /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19 
7f34da842000-7f34da857000 rw-p 00000000 00:00 0 
7f34da857000-7f34da95c000 r-xp 00000000 fc:03 28573902     /lib/x86_64-linux-gnu/libm-2.19.so 
7f34da95c000-7f34dab5b000 ---p 00105000 fc:03 28573902     /lib/x86_64-linux-gnu/libm-2.19.so 
7f34dab5b000-7f34dab5c000 r--p 00104000 fc:03 28573902     /lib/x86_64-linux-gnu/libm-2.19.so 
7f34dab5c000-7f34dab5d000 rw-p 00105000 fc:03 28573902     /lib/x86_64-linux-gnu/libm-2.19.so 
7f34dab5d000-7f34dab7f000 r-xp 00000000 fc:03 28573771     /lib/x86_64-linux-gnu/libncurses.so.5.9 
7f34dab7f000-7f34dad7e000 ---p 00022000 fc:03 28573771     /lib/x86_64-linux-gnu/libncurses.so.5.9 
7f34dad7e000-7f34dad7f000 r--p 00021000 fc:03 28573771     /lib/x86_64-linux-gnu/libncurses.so.5.9 
7f34dad7f000-7f34dad80000 rw-p 00022000 fc:03 28573771     /lib/x86_64-linux-gnu/libncurses.so.5.9 
7f34dad80000-7f34dada3000 r-xp 00000000 fc:03 28573912     /lib/x86_64-linux-gnu/ld-2.19.so 
7f34dadda000-7f34dade2000 rw-p 00000000 00:00 0 
7f34dade2000-7f34daf87000 r-xp 00000000 fc:03 52175026     /opt/vertica/lib/libAutopassCrypto64.so 
7f34daf87000-7f34daf9b000 rw-p 001a4000 fc:03 52175026     /opt/vertica/lib/libAutopassCrypto64.so 
7f34dafa0000-7f34dafa2000 rw-p 00000000 00:00 0 
7f34dafa2000-7f34dafa3000 r--p 00022000 fc:03 28573912     /lib/x86_64-linux-gnu/ld-2.19.so 
7f34dafa3000-7f34dafa4000 rw-p 00023000 fc:03 28573912     /lib/x86_64-linux-gnu/ld-2.19.so 
7f34dafa4000-7f34dafa5000 rw-p 00000000 00:00 0 
7ffe326d1000-7ffe326f2000 rw-p 00000000 00:00 0       [stack] 
7ffe327fe000-7ffe32800000 r-xp 00000000 00:00 0       [vdso] 
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0     [vsyscall] 

Backtrace Generated by Error 
Signal: [0x000000000000000b] PID: [0x0000000000007232] PC: [0x0000000000ad5ec7] FP: [0x00007f2f638c0a40] SIGSEGV: SI_ADDR : [0x0000000000000000] 
/opt/vertica/bin/vertica[0x301ecd7] 
/opt/vertica/bin/vertica[0x306b464] 
/opt/vertica/bin/vertica[0x306c6c9] 
/lib/x86_64-linux-gnu/libc.so.6(+0x36d40)[0x7f34d9fbcd40] 
/opt/vertica/bin/vertica[0xad5ec7] 
/opt/vertica/bin/vertica[0xb09e64] 
/opt/vertica/bin/vertica[0xa9c787] 
/lib/x86_64-linux-gnu/libc.so.6(+0x498b0)[0x7f34d9fcf8b0] 
END BACKTRACE 
NO THREAD CONTEXT 

たぶん今誰かこのクラッシュの理由は？

Answer 1

基本的に、これは私の経験から多くのことを意味し、他の理由をデバッグしようとしていたと仮定すると、これは「横向きの最適化」メカニズム（Verticaの最高の機能、あなたがすぐに結果を得るための時間）が問題に遭遇しています。 以前は、特定のクエリが原因でこのシナリオに遭遇しました。複数のプロセスのエッジケース（重いクエリ中にタプルムーバー）が発生し、時には無作為に正直である場合がありました。 私が開いたケースは「これはVerticaのバグに関連しています。最新のバージョンにアップグレードしてください」という回答がありましたが、これは7.2.xで解決されたと確信していました。 これを回避する方法がありますが、それは部分的にまたは完全に「横向き」機能を無効にすることを伴います。 問題が解消されず、Verticaの応答が得られない場合（またはサポートを必要としない場合）、これは変更する必要のある設定パラメータです：EnableEMMJMultiblockSIPS これは理論的にはパフォーマンスを低下させることに注意してください。 また、 "change_under_support_guidance"フラグがオンになっているので、理論的にはそれを変更する前に "医師に相談"する必要があります。 これが役立つことを願っています。 アリ