From 38ee577945654e88ed4c4c5fe93c2dd2c62908a9 Mon Sep 17 00:00:00 2001
From: Andrea Rovinelli <arovinelli@anl.gov>
Date: Tue, 1 Sep 2020 16:00:37 -0500
Subject: [PATCH] fix and closes #15793

---
 .../BreakMeshByBlockGenerator.C               |   1 +
 .../gold/hanging_nodes_parallel_out.e         | Bin 0 -> 44188 bytes
 .../hanging_nodes_parallel.i                  |  83 ++++++++++++++++++
 .../break_mesh_by_block_generator/tests       |  13 +++
 4 files changed, 97 insertions(+)
 create mode 100644 test/tests/meshgenerators/break_mesh_by_block_generator/gold/hanging_nodes_parallel_out.e
 create mode 100644 test/tests/meshgenerators/break_mesh_by_block_generator/hanging_nodes_parallel.i

diff --git a/framework/src/meshgenerators/BreakMeshByBlockGenerator.C b/framework/src/meshgenerators/BreakMeshByBlockGenerator.C
index 8340296f6afa..d66309c75077 100644
--- a/framework/src/meshgenerators/BreakMeshByBlockGenerator.C
+++ b/framework/src/meshgenerators/BreakMeshByBlockGenerator.C
@@ -221,6 +221,7 @@ BreakMeshByBlockGenerator::generate()
   }     // end nodeptr check
 
   addInterfaceBoundary(*mesh);
+  Partitioner::set_node_processor_ids(*mesh);
   return dynamic_pointer_cast<MeshBase>(mesh);
 }
 
diff --git a/test/tests/meshgenerators/break_mesh_by_block_generator/gold/hanging_nodes_parallel_out.e b/test/tests/meshgenerators/break_mesh_by_block_generator/gold/hanging_nodes_parallel_out.e
new file mode 100644
index 0000000000000000000000000000000000000000..6122e049c6f8755371e408196550ff8cbae93d7b
GIT binary patch
literal 44188
zcmeHQOPAZmm8N4WZpoG(u_jSGa$I`(5vyC>QcJRwaMXIVY{il+M-SUkG7w0DY*-|~
z1Ay&roh)YIIVX$!gjwdyEIiBETZ>uDVixlQyq$AqnPnEUnC~m#k|0PlQD}BXw7br^
zETF3J;nuykZWRi}!j-Gneo(1YNc%uX8MhtJ3ZuaFS~#mz4uj^H)^<Gy$De?nYx=!_
zF=%h(b{t&bba9ddUEZ@hEYIto_j(<x;dYq)ENCy!J-^|EOsQ0uF~>Bg?eO>@XkUD8
z)!L767T;^XTxW$&lwA8f@^pIWHo(VF`b!Ch>k(#2<ILgr<pjs-IsxvfGnhVH{**4y
zI%dl2jM4I^b@?BTme(1h<(Koy>kO8Ek$lGW3dtm~(`jTRTaGt-F;k9!KhC6`8B^{o
z(z1BxkjDGIATskbE0tG<)3i)}I-I8K{pN6*u3M%YS*c{ok(KN{$V!EB&@!N{SnGCx
z^JhTXeq68V<Mf|d21MI<!S1@&x)X%1@8Ptv2lUL!zwE0bem*DtV6*Mp5n6!N^<6Kr
zzVw3z^zfMWOncDxL%g@?wqbK|Mk<f_FXF<p%V-#O)C*I2IIQf6+^9`31h&05)@-lE
z+vzr8b?v}zx1F}-_o9WQSmm{jz2SD)ZqTkQG{{!8#_NS2h2s}Mi=chFO@6uNCpRHK
zY<Ci<PwE-rYszV_QyVafbEzK-Fz_DKH^P42bPnaaf#0Prq%3iG{9MxRS+8fWU&Zh6
z^&2?f>xCot+p9~)KfK?e_;CLp5YM4}`hF}s>3(wkpHOyhIC?+&I|=FgJwf6e%BSzg
zvPJLrEz16|?!#hO(^w{yw*(wNs}%=X{soC~*-f2I`Q?;-^<ls4<4I)?{0B-<M^puE
zkGhxxv7Qo`_EmgxkTydZr^{2u+4BFBl>axDhm6wYDWjb7Km8}<?W0WkSHwKAEoQH2
zAPwR5ukiCC+k-{N)3Lia&&mhaK0{s*UMFvJb>H)xdPKWq{n#F;H__c*?K7gyZmR9=
z`Ed2K_fdv{c=1u?5P23nIyd6&2fYL`z^nWN$|Jmy#-n2--pe4iD-*mYD39>7L--N?
z=v0aKD(FX`GI-zeIxU}JdDDkVfP5+s<C8aaeRTOycL)^RYjK|bW!Z!A`J4ZXcrMkC
zZBbSoVA%wha%WklNg%F@Pt*y-f;*|~4VF!CDSzVr4M+lU*$xm?8$W_Oscc#f)B|zZ
z*GeGnXYq;pPsD;dq3q#fESvDl4wAS(0ZB;ld-(TA6x>N=|CMDETz0a=P4tALxIHR;
zR5|=DV!@qMR_i#yWk*e1_VW_RZ*rd_hj1*olgd&~bFm-j+u7>^ikP@7@%a(0<D{(E
z!{5ev`j=%JN!dRl7F^LW`I5l0zmHFj{28&76}`P71reukkG4}~MHfHIludAt{#UB3
z$d}_F3B+BAPmZPQCNfiTp8jRoe~-_Pv2Oe6ob`Y@86+W%KH@NlWhF4}SbTE)HsV*;
z?RMC|Zpo?9nIf<p#}M?X64+O*#3x@LKs<6Sm4G1E(tk?ewJJXO`Yz&;YpE0jxt6|C
z0<TTl>emsDN3Nxk5ae3=MG5I^|AfTY=V2UaMRpD6yoP-x<s^afdL=$N&ii3(*YvHx
zsiT(<an5UwfN1j)koJ#%h)<4xg_wC+;&qfM@w0j9b7brMbb0ojtV_CF_E@eXKFiAW
zd!8_5OptVmvqdC*CAmH?mg}T^_B?xCHa~lwEuY1mR6Z|1FMZbWrCt)})kpFrmU1f@
z{YrjbEZ0d~^!jXh!Oy14x#Z`?Qf{Rn|59G!N!Mk|<?$iuPm%+PzxnTb4EH6LbcrQh
z;%s{M{9=rEw`jali9^x&Nm5>7;Y;FddLADu2~IYa>m?RkiL>cXD}I(=;ag(K&&JvO
zy!sVQU#Y}lQk;kPB)L8tXZe<MDJSQ7xRcUXlKbYxdH0d>-~1&8$c>XH*KhLT?Dg4l
zMf2r4!}2lrJNJ7r;cLg@q`nt-C?3(P$hmAR`q|;@^EA3+df2X>C+IJ)K7Y;hnq80I
z2;|+g=0}mw*9dtba9e8}#^;8}@8;&|jJDI<5}?uyd~fR#Ti*b=+pp(DE-^*z1Wmgx
zbIc<=ZC_GT5X1;qr4smTB+ow_9m?|)=eOoSobTiurpy`2T%XL*$=up&D02YBxg*Z=
za8BkRh;tpBm*9K@=MgwRz~_EG&nwVj&=Js4&@s?)&|9FlLGOUx1^pcK9_R#U9<%^D
z3F5OZAH(@L&Bx+p5a$*+XTZ6D_d(}D7eK!N{Sw6Y8-EA72wDMM0$m1O0bK>Hg06u+
z0DTC$4*C`7BM|2rZh~%sJ_g+eeFFM5=nm*E=pN`k=u^;VpwB_S0X+cy7W6yN--9gB
zLy!%sf$E?Jh&I;*wLohi7xV>)ZMzL(1J3FwD`P&>ioU2v%3tJ8Jy5Sq7adYBOc$Ln
z??up$KrF*N>WsQ#ne6?tI?LXV`V>9BjpOY7sAr~&j<fe;9&LcSXBp~&IuTo=%qe@Z
zBj!;@v_F<%9(6+dVwr4t%AfiWyULbl9(6-|W0_|_KL9-odJc3Ev;w*ex(Z?%^Y(*Y
z0x^www5N|iOk<w38KyCh_C#9}+o9diX0kTUH0C`7(QcMOw12UArac7Fj@CeI2h6(w
z`UQw>U@vGNh;4ywK<xfXlEyr??GHdqy9T-mVtZg3^L_$iJ75~~*ap}hX!By{4{-bi
z=nRPM@)3w>Yy-4)+CS5ncOFC=XBzWdPz%H~=KT`X0X+|z14$hyOUhL2`2`%)e#s+k
znEHAav<F0)(<aC}bx2*Yy&M4j7(|;P9?KDv>BQwVynY->dESSZEJMs!K*VJFR+Q#n
zcxBy)!@9CQ#FF}uXA{celSj&fBsd~V;hpytIaAgm(=;E%5lYKNWG%5^QYK7G$2=wp
z4r9uma;MCBP9ABGEJt3bTgsI>q`uPE7C9DuN}Z){v=!o!$E`^8Ds4cnle%PMu?u3d
zE^=Sd3vr~*tP|TO+vNu!wlBF}<jCvEv-n~9_T!+pK<|Q<K&L=#bHoz=bP30+pie=c
zfux<XeF{$^3$ZnkG4COLz%d;2K0gP|gBC%&m$YHFQ{Lwq=qBhE=nm*U=yxEt{RYSZ
zxge=K^_|x15u6_d@qP=SlOWzp{21>;`P>G50{S(G_i2J!Ao@PycR-XOWxoeR8)Dn0
z9;Mw=mWMzJ#CskGy#qP{;(aO8WzhQ|`cTUBD(EB74G`~r4@BAi7E}Y(LF7U7aT>?O
z5LunWG4bfz(siOf9)a2*@=lwk?T~lcmb6RJ)qbSC3}Ss~i<GCxlJ@*2NP!N6STEYi
z+aT6Y^!Of*S=V_`TGq59@=adJ;|l09=tI!2K&(6UOC8Xregm>V4?&ax_1x^bj3x%^
zs82`7goy}S6*#J{1dbg!4OQDzH$VRP&Z?rK%ZD)xZW~Zt@jD&cYp5GoR;DfmtzO6R
zqEO*pB^XsF*Zhui(hmG}z_r`%Ni5&^0xJQ+lebns#afeIvw5=P`=N6(a>6J+w0Jo0
zcOy0Ls?-Xcg@uKRg9RYTDx3vZ&CfeQ;0F@V_q<*R@g~XhK9&&$Sbc^B&!2BKYV&+{
zivm1Yp*rfm2Gk3X)OEZ#Dp|)8VllepT7VaZSn2dgGZ}QS0Lu5+63T|y^zO$?uP&%T
zXt|N9L;Z{v>vpq#UiqFnwRmc2e)07DX?l^d;f7ng>4a-)1k!1oJG->F*j!$Ee|fQf
zdbz%|e74b8w9hq{n$0uION*z^E!LLbr~4TSw^#4psgJ@bb$VfGd4V3mFx<JZdOII*
z(GU&Auk?Zd?LytfBFnT0)u*t(n|7d1FR7*F3ul%tET7gAoOFxT4X572o6feQF|j<Y
z)78Lfz{Lxv7cVR?7XqAg!~g$$w!!OOw->2vSg!Xpw!Q}(EKD;f<$88Ka@U<fs~bA1
zs&_o!YB){1*N)gVP6z~aBiC+Qn9%81dfg)z8FJmP2Ck|bm+r3KxjO-;pFIu`FX0DF
zR@L=e_b=T@RuJ~D%RNx4-U~7Bhn2p5{ZTjok|XmfCxCd#4<9BlgV-F9%VW@*EsZz;
zlB24+bnh<5c?E+~IY8wB^&+i&RC5lw*iP6P6Iay-m+sx+ShiT0dP^yGTZ2*$t~#||
zYl;ne2ih`*sg~W_7^4rJR8_fM@K`}86|VVTT68$RH>RPesxs^P5<m<=oPa)uYjKBg
z%K~EbV0E0xwi<S1r>kEQ5M#v9Nja?nWJy50dBD0Nw89=%VGYo5R1%O2n*<Qc%Y#lI
zbqat(41z;5k39ozIUX&+s-0jeEm|qN7x}PfEFJS2=umwR%l=bhG;ey-@94viYkYLN
zq?>b!xA@SU!--wMoyf5pn`2$em_*31UU$0aMLjGF->|xF-NxTDT=)w8$Wo%EXr<VV
zb=#|t>#R%-JJvEEpz2mwxADiRw2C1{b3i;UVF2q`G79TA>6+8@1BVuczdl*DdRVCX
z7%U}#34ajgP}R+~41<o)1L(hr;cr-WP+zm~FBbnxr(w12POV{Ec<>;5g`TU(;V57`
z^4p0;mXV<s1%4arJX?Jym@;qk;aoC4v}>U?;A?;g89MW4iuZi|5p00J{^SBKaw4r*
zP^#g=(?nLci#5RQ-iU3RcL5DI<g=qRy1p5*XR+#QPW@3K`xE|^ay<PkI*{7%k+~hV
ztvr2bWOJpowU=>Wx?=+X7ZIdJ6Jw>uE4L4>Ib7t_X|Vu6%y}hEu8)#BsH)^SuNYos
z2oTd?^+$GV$aJczi@#ac3&LSaR?$yyH1U7EUKb;;AuuvpRm-Q&FP}eq?$r50^#)+G
z*|73Ema6))TbMl*R4VREJl~@*F=pz*X?Oj;<JMX>Km=fHhz)l=w=KVC<Qx(}K5>sj
zG;hlZ;5bhcE5+1(0Whz+0{GsNNlO7Bdbc`ykg?6LRF!Fp&7Oyjax|E?WpGHqvFriA
zsti;d+hH5S^)_a#r>Nz;{zQ~AZ`7yo?_n)WcaIaGuCnRFBmU)zu}uzKnZc6wP8KHi
z$3Kpmj~s>oF$Tj#dD?ik3pmm@mjH|h!FgSu?o$j*QK@89oeXih@g(1%(xo}n?Roe?
zRHK@=<%Gk$=7%a9_-l3n31D7p(K0k@DL}F}^fQTtMRpNhAPog`4mBXWAs*^o4x2J<
z#(V^;$8XkpXnkS#A64{=uTDv&05GzHD4rm$+2K$-VOutxc9!RpR^azIip^Bq+z!J>
zZr5@)_yh^}kc?RedNH@d&~w606J8td1g&vZHnqdhZ?8M~gPRgn?zY{C+Zhb1nLaWH
z<jj8>A#-dl!+2O24-xIik~a%h&B3+^G@Ih11~z)7@J6<Vx4jw0`lqIVGcZ-fH=|RT
zqe{FcA0ESQ8}G2=7xR7D$$`1qOns_~El#*>U}6{VhSR~^!Ma|(-NTjxc!h*%XKWkO
zTJys}%P}<@yr9uzn+(i=M{_{^cFS@b1B{^~bEU+9*&$6Iv;?5v^BQ)rnZx8Z0LL?F
z4v3j0Y;e@W#E5>~)pkR4SbVLi|2oc7Bafq$wi5KqwYchTreikea1;>6*lfr1n`MT?
z?zAU$Lp_6?_a@UwezC{a{W9LCU~8O_S#emSc}vNk9ni*I)vE#MH4}$7AyTU6xfs26
z(9<`$W+@xYIn>jmfWs424KKQ~{j<6Is^jHy;N#_9Uyj({DxL#`Od&(F7c_bfHfbsS
zrV+Q4e!~H1@$pSOsk`MItSN`sRV=HB^tlOlu^mo*LK4P;zNF>g9g;or3{a*mOP>TS
zN0?;i_EW=EHkBbCq1uk!9D#~qAw#3#7v{b&W(eKP)5(BG^OhoO@p4ARRdsds+NFCp
zimpDvvz|DbytlWeQ>No}(XTURI1ObO111AwG(t?9wl@2CXm*~1LGA>nwS(D8Jy<w-
zdmzSbk3CtpEk}sv503!cs^2qr4oYp=t6((?CdN`inIL~wnXkEWJz`ZA@1SD$HQ|j)
znJRm^3q`<wDZrE+Qv^eys<;Zfc;Lm};~|LQ6EwZzXedd;UO2gJb2hrCSz+DuI#Yby
zqrhgr>BT*)(_oYNK)TyJ$+F5d*AA^b<1S;^8ZgheO9SQ^cPYTZ!<pqbn^-eIK_tPv
zUxo|?P;WPdWe81oAW`!H=MMP8Ek}rDyp7)EEUzCZQ{^p(oMp7^Y+$^g_weFsQ~t}l
zHCVw~hQpTK!*-8tzh>jF_4@6P*bL$_W;3BrDYQhS-?Yh#m)Go=Sw_oK?o*N_jodhl
z9A!fp8E#<Qp2g{(W0}oDp?B$t6nWuBhm);2p{nMM5DBw6fy2HAiyXv&6F4jaBxMNr
zcxw)qjAi(Ef((riXJjaXX<|2;(twFdnfal}W&Ho{5r-j{H!t(w2wRUvSY^9`<t%~i
zg?jc&yKKEN2lGmevGugBzIx10nJ(bze@=1re|*MNmq}F>_G%5kV`EaEf8U)HcujwM
z6uoURQ&OQi$ex6y^Lgn2Fr{mm)lLDXOd%hefO_5iH2W0Ylr!eX8|hG{lZpXT)$Pjw
zkmi6h@n|-%w54r(MGAiA{ox&HdYAdMfQjzQ{zkq}WR<sk%~fVdyya`IGX5~$WeW4A
z&GaJ_c}J+Kx8K<~v3cV0yVZAi&Y{x@9w5x0>K`q=%YUaMFn#77EM_F)+7$X_m6Iov
zaqg8eG@ZxB!d1Mt<?ADYj|2kVxqfxE5POMIxSl0&>-aOh)o<1PdF?VBPTgbce++R$
zvyu8DA!~<xC=lyYi^<XA!kK{`&X|Kewd-K1<*7SZ^9S&!$HDduTg`vB9BkhMSw&vC
z(jV+P*kP||KH$U~AO0n?l!KLyewH2V>0JlABM#R5CD+sAVEZH3A;bO-j9>>2wn+cC
z>tKhSE6;Y^!7eSF8jN7Y!D3Q%W=F8gyAF0o9IWX}f0=WT>9~w-mwDDRnj%OW_V>WS
z7U}<}g5449up#cagT?K>TMqWju7lkX2V0~C52o5^#ZTV|c7AB&@SPgL7U}<}lwAi)
zDGb7nJJ@tbuVe%}G*vZYbFgQ39qf)c*di_XX>zb>!<G^3ci6!eSzSf9vg=?6&Xq?y
z?qG*ra{V<N?Dz2B!2`cDrK27AJIPFRqtji+KND4+?sCD|sIn}8v8J&iXvV5Mjd%1j
zR^@5DHJh<2Ph%c?#;QDxnWY)4@-&|Hrd;LS(bx8eV7sHQ>Bw*f{x`Zi`r4MNXXP(B
z{Q>9h=&OXjXHLtzqp$CSmUl;ACA9qD<9L7BZNH_Ed*k1F-LB&`_z{tzop)rO(|m?A
z1;`zb@#z4;(y{sC6TKCC*T>xR5Rjahb6EG=+5JlejIsG&a<~bbkI!-Cgi?UqNTvVp
zj0|vzDu?SCjG<F=z=q%K*x8+Q2bku7j{caNgO4{1P*O+u_s8{H*Y94xbVJ>}eiI+(
zTD@(p-nyFn=Sa+X5M%F{4ZqRLlVBMw>koyEZi*^Qnj3bjGi9Z;yk58Mk8dVm(_ATQ
z{1Rk-Ft75KfBz$grhDr0jZ}b5r*oJzZ+c&ZITje-!CZz@-#{$chtqB99eOSP*AD*#
z?pwOKQo2si#6}o)cX-QD5vh5VyVw9Q{(1_&J^=o(xmOGSI>SH7wQ$XqG6X0e>gd<F
zgvX8nv9sG6c1^ZDa+m(=aoH*lzPT_`YqLsYS2ry~t(vw!y4$fihy1smsB}zhZZ_!h
zdV1gKHS99#2iZ+aN^rR8)#Lq=$M9FiIYdr<y8duIdNh``B+<Oe8x4EffSH}yhv7?b
z*va#)8rc+Z24*;K2R`<r?@V!wJ^fy9tE~XbjBRpOii`1J^c8;rIgw57uqzpWP1swI
z99~;Zum)qcEsppdpIX43m~%KaA2|phHm4ld@0kPo`cre7!9mv~5@eN4{{tRi$9Q}^
zC9q=TP;Xbe9YDQkbpVh(GUt$EkK7F(%XsX%j}Nxy?2HO_tLn4Q`LX(<0UN)^p9Rj_
zwcONwP1ur>92WUM>wtd%@^kF`03g0w;bYf54_kM8kDb8hcnKe!OLhS$svJJ}aK|)!
z84jQG;UE6Dy@U4va2;P@^RwR%F3OoyTB-QMDarRWvQ|hL8tpGz0pL167Z~pj7r4=8
z=2IBvN^x8G3Y=q64TSCMCSlf`!$(fw;af;`A7f#Bf-J*e3A5>cP<A||d6oNs4Tm#A
zj#nQNqdB1d_L$de;|oyu@EX5vfUhrv{T(gLWtfkp)nX3V--@|r2Z0MmiwA<x#%DU>
z@wPeO#81W;cL9%KGIWXd#<)GGtLk%URfS^gvcyluV23WfHy8Hu7LJpT2%A?~1LD(R
z;U>B&`EKH%O_u=VCu0Tx*&}m6y<t-qUr@2e8jv|4Kh@EH(#!H^-UU4UL*hcVwG)Ld
z{y9cnnajklB<B(zOwJ`fl$=X^AUT&<CFe;TpH(XT`y~l0N0M^KlK3qt8OKG-{~s(j
B1EBx_

literal 0
HcmV?d00001

diff --git a/test/tests/meshgenerators/break_mesh_by_block_generator/hanging_nodes_parallel.i b/test/tests/meshgenerators/break_mesh_by_block_generator/hanging_nodes_parallel.i
new file mode 100644
index 000000000000..f8fa80b487d0
--- /dev/null
+++ b/test/tests/meshgenerators/break_mesh_by_block_generator/hanging_nodes_parallel.i
@@ -0,0 +1,83 @@
+[Mesh]
+  [./msh]
+    type = GeneratedMeshGenerator
+    nx = 2
+    ny = 3
+    nz = 4
+    xmin = -2.5
+    xmax = 2.5
+    ymin = -2
+    ymax = 2
+    zmin = -1.5
+    zmax = 1.5
+    dim = 3
+  [../]
+  [Partitioner]
+    type = GridPartitioner
+    nx = 1
+    ny = 3
+    nz = 4
+  []
+  [./subdomain_1]
+    type = SubdomainBoundingBoxGenerator
+    input = msh
+    bottom_left = '-2.5 -2 -1'
+    top_right = '2.5 0 0.5'
+    block_id = 1
+  []
+  [./subdomain_2]
+    type = SubdomainBoundingBoxGenerator
+    input = subdomain_1
+    bottom_left = '-2.5 0 -1'
+    top_right = '2.5 2 0.5'
+    block_id = 2
+  []
+  [./subdomain_3]
+    type = SubdomainBoundingBoxGenerator
+    input = subdomain_2
+    bottom_left = '-2.5 -2 0.5'
+    top_right = '1.25 2 1.5'
+    block_id = 3
+  []
+  [./subdomain_4]
+    type = SubdomainBoundingBoxGenerator
+    input = subdomain_3
+    bottom_left = '1.25 -2 0.5'
+    top_right = '5 2 1.5'
+    block_id = 4
+  []
+  [./subdomain_5]
+    type = SubdomainBoundingBoxGenerator
+    input = subdomain_4
+    bottom_left = '-2.5 -2 -1.5'
+    top_right = '1.25 2 -1'
+    block_id = 3
+  []
+  [./subdomain_6]
+    type = SubdomainBoundingBoxGenerator
+    input = subdomain_5
+    bottom_left = '1.25 -2 -1.5'
+    top_right = '2.5 2 -1'
+    block_id = 4
+  []
+  [./split]
+    type = BreakMeshByBlockGenerator
+    input = subdomain_6
+  []
+[]
+
+[Debug]
+  pid_aux = true
+[]
+
+[Problem]
+  solve = false
+[]
+
+[Executioner]
+  type = Steady
+[]
+
+[Outputs]
+  exodus = true
+[]
diff --git a/test/tests/meshgenerators/break_mesh_by_block_generator/tests b/test/tests/meshgenerators/break_mesh_by_block_generator/tests
index 087be07454d5..dba9dfde4980 100644
--- a/test/tests/meshgenerators/break_mesh_by_block_generator/tests
+++ b/test/tests/meshgenerators/break_mesh_by_block_generator/tests
@@ -149,4 +149,17 @@
                'interface;'
     []
   []
+
+  [hanging_nodes]
+    type = 'Exodiff'
+    input = 'hanging_nodes_parallel.i'
+    exodiff = 'hanging_nodes_parallel_out.e'
+    requirement = 'The system shall properly assign node processor ids for paritioned meshes'
+    design = 'meshgenerators/BreakMeshByBlockGenerator.md'
+    issues = '#15793'
+    mesh_mode = 'REPLICATED'
+    min_parallel = 12
+    max_parallel = 12
+    recover = false
+  []
 []