title: vertica Received fatal signal SIGSEGV
body: <p>One of my vertica cluster node down, and in log file a found :</p>
  
  <pre><code>2016-03-19 20:01:55.263 Init Session:0x7f3420013970-b00000000a70ab [EE]      &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.263 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.266 nameless:0x7f325accb730 [Main] &lt;INFO&gt; Handling signal: 11
      2016-03-19 20:01:55.291 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.291 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.292 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.293 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.293 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.294 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.295 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.295 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.296 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.296 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.297 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.298 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; SortManager found maxMerges 7 too small(38 MB Assigned).
      2016-03-19 20:01:55.298 Init Session:0x7f3420013970-b00000000a70ab [EE] &lt;INFO&gt; After disabling optimization, maxMerges becomes 7.
      2016-03-19 20:01:55.305 EEThread:0x7f307fab12c0-c0000000099401 [EE] &lt;INFO&gt; Running ROS from sort buffer. Merge chunks = 1, merges per batch = 36
      2016-03-19 20:01:55.305 EEThread:0x7f3379799f10-c0000000099401 [EE] &lt;INFO&gt; Running ROS from sort buffer. Merge chunks = 1, merges per batch = 36
      2016-03-19 20:01:55.305 EEThread:0x7f2fb3edbea0-c0000000099401 [EE] &lt;INFO&gt; Running ROS from sort buffer. Merge chunks = 1, merges per batch = 36
      2016-03-19 20:01:55.306 EEThread:0x7f307fab12c0-c0000000099401 [EE] &lt;INFO&gt; 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] &lt;INFO&gt; 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] &lt;INFO&gt; 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] &lt;INFO&gt; Finished writing ROSes from sort buffer.
      2016-03-19 20:01:55.309 EEThread:0x7f3379799f10-c0000000099401 [EE] &lt;INFO&gt; Finished writing ROSes from sort buffer.
      2016-03-19 20:01:55.309 EEThread:0x7f2fb3edbea0-c0000000099401 [EE] &lt;INFO&gt; Finished writing ROSes from sort buffer.
      2016-03-19 20:01:56.780 nameless:0x7f325accb730 [Main] &lt;PANIC&gt; Received fatal signal SIGSEGV.
      2016-03-19 20:01:56.780 nameless:0x7f325accb730 [Main] &lt;PANIC&gt; Info: si_code: 128, si_pid: 0, si_uid: 0, si_addr: (nil)
  </code></pre>
  
  <p>ErrorReport.txt</p>
  
  <pre><code>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
  </code></pre>
  
  <p>Maybe someone now the reason of this crash ?</p>