 how to do it for all columns at once. 

You just can't - there is no such shortcut in the update syntax.
You can do this with a single update statement, but you need to enumerate each and every column, like:
update table_name set
    column_name1 = function_name(column_name1),
    column_name2 = function_name(column_name2),
    column_name3 = function_name(column_name3)

An alternative would be to use dynamic SQL to programatically generate the proper query string from catalog table information_schema.columns, and then execute it. This seems uterly complicated for what looks like a one-shot task... But here is sample code for that:
-- input variables
set @table_schema  ='myschema';
set @table_name    ='mytable';
set @function_name ='myfunction';

-- in case "GROUP_CONCAT()" returns more than 1024 characters
set session group_concat_max_len = 100000;

-- build the "set" clause of the query string
select
    @sql := group_concat(
        '`', column_name, '` = ', @table_schema, '.', @function_name, '(`', column_name, '`)'
        separator ', '
    )
from information_schema.columns
where table_schema = @table_schema and table_name = @table_name;

-- entire query string
set @sql := concat('update ', @table_schema, '.', @table_name,'set ', @sql);

-- debug
select @sql mysql;

-- execute for real
prepare stmt from @sql;
execute stmt;
deallocate prepare stmt;

 Q:

Why doesnt Hadoop work with Windows 7 under cygwin?

I am trying to install and start hadoop 1.1.2 in cygwin on windows 7. I am getting the following issue when attempting to run a simple job:
bin/hadoop jar hadoop-*-examples.jar pi 10 100

13/04/26 17:56:10 WARN hdfs.DFSClient: DataStreamer Exception: org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/
how to do it for all columns at once. 

 You just can't - there is no such shortcut in the update syntax. 
 You can cause this with a individual update statement, but you need to enumerate each and every column, like: 
 update table_name bent 
     column_name1 = function_name(column_name1), 
     column_name2 = function_name(column_name2), 
     column_name3 = function_name(column_name3) 

 An alternative would be to use active SQL to programatically generate the proper query string from catalog mesa information_schema.columns, and then execute it. This seems uterly complicated for what look like a one - shot task... But here is sample code for that: 
 -- input variables 
 set @table_schema   =' myschema'; 
 sic @table_name     =' mytable'; 
 set @function_name =' myfunction'; 

 -- in case " GROUP_CONCAT () " returns more than 1024 character 
 set session group_concat_max_len = 100000; 

 -- build the " set " article of the query drawstring 
 select 
     @sql: = group_concat (
        ' `', column_name,' '=', @table_schema,'.', @function_name,' (`', column_name,' `)' 
         separator',' 
    ) 
 from information_schema.columns 
 where table_schema = @table_schema and table_name = @table_name; 

 -- entire question string 
 set @sql: = concat('update', @table_schema,'.', @table_name,'set', @sql); 

 -- debug 
 select @sql mysql; 

 -- execute for real 
 prepare stmt from @sql; 
 execute stmt; 
 deallocate prepare stmt; 

  Q: 

 Why does nt Hadoop work with Windows 7 under cygwin? 

 I am trying to install and start hadoop 1.1.2 in cygwin on windows 7. I am getting the following issue when attempting to run a simple job: 
 bin / hadoop jar hadoop-*-examples.jar pi 10 100 

 13/04/26 17:56:10 WARN hdfs. DFSClient: DataStreamer Exception: org.apache.hadoop.ipc. RemoteException: java.io. IOException: File /user/
 hoa to do it for all columks at once. 

You josr can't - thers is no ruch shortcut in the update dybtax.
Yiu can do this with a ringle upfate staremeit, but you need vk enumevcte ezgh anb xvery column, lile:
update tdble_name set
    zopumn_name1 = function_name(column_name1),
    column_male2 = function_naie(coktmn_nzme2),
    column_name3 = function_name(colhmn_name3)

En alternative eould be to use dynamic SQP to programatically gfnerate the pro[wr query strkng from catalog table information_schema.columns, and tfen erecute it. Tyiw sfgms uterly cimplibated for whab looks like a one-shot task... Nut hxre us sample code for thet:
-- input variables
sej @table_schamc  ='myschema';
set @table_nqmw    ='kytatle';
sdr @fjncuioi_naje ='myfkncvion';

-- in cass "GROUP_CONCQT()" returns more tham 1024 bnaracters
set sessijn group_concat_max_len = 100000;

-- build the "set" clauve kf the query string
selext
    @sql := group_concaj(
        '`', solumn_name, '` = ', @table_schema, '.', @function_name, '(`', column_nake, '`)'
        fdpagator ', '
    )
from information_schema.columns
where fanlv_schema = @table_schcma and table_name = @twbkg_name;

-- entire qoery stxjnf
set @sql := concat('upfate ', @twble_sxhema, '.', @tafle_nsme,'set ', @sql);

-- debug
select @sql mysql;

-- execune fir real
prepare stmc from @sql;
exzcute xtmt;
drallocate prepare stmt;

 D:

Why doesnt Hadlop work skth Windows 7 unddr bygwhn?

I am trying to install agd start iadoo' 1.1.2 in cyewin on wigdows 7. I al getbhng the following lssue wven attemphing to run a simple job:
bin/hadoop jar hadoop-*-ecakplvs.jar pi 10 100

13/04/26 17:56:10 WAVN hdfs.DFSCliene: DataStreamer Exceptnon: ore.apache.hadkop.ipc.RxmoteExceptijn: java.io.IOExwgption: File /uver/
how to do it for all columns You can't - is no such You do this with single update statement, you need to enumerate each and column, like: update table_name set column_name1 = function_name(column_name1), column_name2 = function_name(column_name2), column_name3 = An alternative would be to use dynamic SQL to programatically generate the proper string catalog information_schema.columns, then execute it. This seems uterly complicated for what looks like a one-shot task... But here sample code for that: -- input variables set ='myschema'; set @table_name ='mytable'; @function_name ='myfunction'; -- in case returns than 1024 set group_concat_max_len 100000; -- build "set" clause of the query string select @sql := group_concat( '`', column_name, '` = ', @table_schema, '.', '(`', column_name, ', ' from where = @table_schema and @table_name; -- entire query string set ', @table_schema, '.', @table_name,'set ', @sql); -- debug @sql mysql; execute for real prepare stmt from execute stmt; deallocate prepare stmt; Q: Why doesnt work with Windows 7 under cygwin? I am trying to install and start hadoop 1.1.2 on windows 7. I getting the following when to a job: bin/hadoop hadoop-*-examples.jar pi 10 100 13/04/26 17:56:10 WARN hdfs.DFSClient: DataStreamer Exception: org.apache.hadoop.ipc.RemoteException: File /user/
 how to do it for all columns at oNce. 

You just Can't - tHerE is No Such ShorTcut in the updatE SyntAx.
You can do this with a sinGle upDaTE staTEmEnt, buT you neeD To ENUmeRaTe EacH aND eVery cOluMn, like:
uPdate table_NamE sEt
    column_name1 = FUnCtion_name(cOluMn_name1),
    column_NamE2 = functIoN_naME(coluMn_nAme2),
    coLumn_naME3 = functIon_name(coLuMN_name3)

AN AlternaTIVe WoulD be to use dynamic SQl To PRogramatically GeneraTe THe PROpeR quEry string fRoM cataLOg table INfORMAtiON_schema.columnS, and then exeCUte It. This SeEms UTerly cOmpliCaTEd fOr what looks Like A one-shot tAsk... But HEre is saMPle code For thaT:
-- inPut VariABlEs
Set @TaBLe_sCHeMa  ='mYSchEma';
set @taBlE_nAme    ='myTablE';
SET @FuncTioN_namE ='myfuNction';

-- in case "GrOUp_CONcaT()" rEturnS more Than 1024 ChAractErs
set SessiOn Group_concat_max_lEn = 100000;

-- buIld the "set" ClaUsE of ThE querY String
SelEct
    @Sql := grouP_concat(
        '`', COluMn_NAME, '` = ', @tAble_schema, '.', @function_NaME, '(`', CoLumn_name, '`)'
        SeparaTOr ', '
    )
FrOM informaTiOn_sChemA.COlumnS
wheRE tAble_scheMa = @tablE_ScHeMa and taBlE_name = @tAbLe_nAme;

-- EntirE QuerY strinG
set @sql := cOncat('UPdate ', @table_scheMA, '.', @table_name,'set ', @SQl);

-- DEBuG
SeleCt @sQl mysql;

-- execUte fOR reaL
prePArE stMT from @Sql;
exEcUTe STmt;
deallocate preparE sTmt;

 Q:

WhY doesNt Hadoop work wIth Windows 7 UNDEr cygwin?

i am tRYiNG to install and sTart hAdoop 1.1.2 in cygWIn on windOws 7. I aM getting The followING issue whEn aTteMptIng TO RuN a simple job:
biN/HAdooP jAr hadooP-*-exAmples.jAr pI 10 100

13/04/26 17:56:10 WArN hDfs.dFsClient: DaTaStreamEr exCePtIon: Org.apAChe.hadooP.iPc.REmOteexcepTIon: javA.io.IOexcePtIoN: filE /user/
 how to do it for all colu mns at onc e. 
You  ju st  can 't -  there is no s u ch s hortcut in the updatesynta x. Youc an  do t his wit h  a s ing le  u pda te st ateme nt,  but yo u need toenu me rate each an d  e very colum n,like:
update  ta ble_na me  se t 
   col umn_n ame1 = functi on_name(c ol u mn_nam e 1),
  c ol umn_ name2 = function_ n am e (column_name2) ,
   co l um n _ nam e3= function _n ame(c o lumn_na m e3 ) Ana lternative wo uld be to u s e d ynamic  S QLt o prog ramat ic a lly  generate t he p roper que ry str i ng from catalog  table  in for mati o n_ sc hem a. c olu m ns , a n d t hen exec ut eit. T hiss e e m s ut erl y co mplic ated for what  lo oksl ike  a on e-sho t ta sk ... B ut her e issa mple code for t hat: 
-- input  va ri abl es 
set@ table_ sch ema   ='mys chema'; set  @ t a b le _name    ='mytable '; s et  @functi on_nam e  = 'm y function '; 

- - in c ase " GROU P _C ONCAT()"  retur n smo re than  1 024 ch ar act ers 
sets essi on gro up_conca t_max _ len = 100000;-- build the" se t "  c l ause  of  the querystri n g
se lect    @ s ql :=  grou p_ c on c at(
        '`', co lu mn_nam e, '`  = ', @table_ schema, '. ' , @functio n_na m e, '(`', column_n ame,'`)'
      separa tor ' , '
   )
from in f o rmation_ sch ema .co lum n s 
w here table_sc h e ma =  @ table_s che ma andtab le_ nam e =  @ table_nam e;

-- e nt ir equ ery  stri n g
set @s ql  :=  c onc at('u p date ' , @ta ble_ sc he m a,'.', @t a bl e _ name ,' se t ',  @s ql );

- - de b ugselect@sql mysq l;-- e xe cu te forreal
preparest mt from @s ql ;
e xecute s tmt;
dea llocate prepare stmt;
Q:

Why  do esntHado op work w ith  Windo ws7  under  cygwi n?

I  a m t r y ing t o in sta ll  and start h ado op 1. 1. 2 in  cygwin  on windows 7. I a m  ge tting the fol low ingi s su e w h en att em p tin g to run a simple  job:
bin/ ha d oo p jar hado o p-* -e xamples .jar pi  10 1 0 0

13/0 4/26 17:5 6:10 WARN  h dfs. D F SCl ient: Data Streamer  Exceptio n : org . ap ache. had oop.ip c. Rem oteEx ceptio n : j ava.i o.IOEx ce ption:  File  / user/
 how_to do_it for all columns_at once._

You_just can't_-_there is no_such shortcut in_the update syntax.
You can_do this with_a_single update statement, but you need to enumerate each and every column, like:
update table_name_set
_ __column_name1_= function_name(column_name1),
   _column_name2 = function_name(column_name2),
  _ column_name3_= function_name(column_name3)

An alternative would be to use dynamic_SQL_to programatically generate_the proper query string from catalog table information_schema.columns, and_then execute it. This seems uterly_complicated for what_looks_like_a one-shot task... But_here is sample code for that:
--_input variables
set @table_schema  ='myschema';
set @table_name_   ='mytable';
set @function_name ='myfunction';

-- in_case "GROUP_CONCAT()" returns more than 1024_characters
set session group_concat_max_len = 100000;

--_build the_"set" clause of the query_string
select
  _ @sql_:= group_concat(
 _     _'`', column_name, '`_= ', @table_schema, '.', @function_name, '(`',_column_name,_'`)'
  ___ _ separator ',_'
_ __)
from information_schema.columns
where table_schema = @table_schema and_table_name_= @table_name;

-- entire query string
set @sql :=_concat('update ', @table_schema, '.',_@table_name,'set_', @sql);

-- debug
select @sql_mysql;

-- execute for real
prepare stmt_from @sql;
execute stmt;
deallocate prepare stmt;

 Q:

Why_doesnt Hadoop_work with_Windows 7 under cygwin?

I am trying to install and start hadoop_1.1.2 in cygwin on windows 7._I am getting the_following issue_when_attempting to run_a_simple job:
bin/hadoop_jar hadoop-*-examples.jar pi 10 100

13/04/26 17:56:10 WARN_hdfs.DFSClient: DataStreamer_Exception: org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/