Thanks Carl, i could test ODBC driver for Hive following what you suggested as 1)
Ariel On Wed, Sep 8, 2010 at 4:59 AM, Carl Steinbach <c...@cloudera.com> wrote: > Hi Ariel, > > Here are a couple more things to try: > > 1) Force libhiveodbc.so to be loaded first by setting the LD_PRELOAD > environment library: > > % LD_PRELOAD=/usr/local/unixODBC/lib/libodbchive.so isql -v Hive > > It turns out that SQLAllocEnv is defined in both libodbchive.so *and* > libodbc.so. I have noticed that if libodbc.so gets loaded first its > definition of SQLAllocEnv tends to stick, blocking the later loading of the > same symbols defined in libodbchive.so. Setting LD_PRELOAD to point to the > hive odbc library is a convenient work around for this problem. > > 2) Set the LD_DEBUG environment variable and run isql: > > % LD_DEBUG=files isql -v Hive > > Setting this variable causes the dl* functions to dump logging information > about what they are doing. Setting it to "files" will cause the dl* > functions to print out the names of files as they are loaded, as well as > information about any unresolved symbols. > > Hope this helps. > > Carl > > On Tue, Sep 7, 2010 at 2:05 PM, Ning Zhang <nzh...@facebook.com> wrote: > >> Something you can check out are: >> - Did you compiled and deployed your code in different environment >> (Linux/C compier version)? If so there might incompatibility issues in the >> kernel/C .so files >> - Can you check 'ldd isql' and see which .so files it loads? >> Particularly libodbc.so should be the one coming with unixODBC. If you >> installed other ODBC driver manager and their LD paths are before >> unixODBC's, isql may got linked to the correct .so file. In addition, you >> can 'ldd' libodbchive.so etc. to see if there are missing dependent .so >> files as well. >> >> On Sep 7, 2010, at 12:44 PM, Ariel Leiva wrote: >> >> All three .so files can be found in LD_LIBRARY_PATH and i am still getting >> the same error. Thanks for your suggestion. >> >> On Tue, Sep 7, 2010 at 1:41 AM, Ning Zhang <nzh...@facebook.com> wrote: >> >>> It looks like isql cannot load libodbchive.so. Please make sure that all >>> three .so files libodbchive.so, libhiveclient.so, and libthrift.so can be >>> found in LD_LIBRARY_PATH. >>> >>> >>> On Sep 4, 2010, at 1:31 PM, Ariel Leiva wrote: >>> >>> Hi, i built Hive odbc driver following >>> http://wiki.apache.org/hadoop/Hive/HiveODBC and wanted to test it with >>> isql, but i get the following error: >>> >>> [ISQL]ERROR: Could not SQLAllocEnv >>> >>> I set LD_LIBRARY_PATH so libhiveclient.so can be found correctly. >>> I also tried, >>> dltest libodbchive.so SQLAllocEnv which succeeds with >>> dltest libodbchive.so SQLAllocEnv >>> SUCCESS: Loaded libodbchive.so >>> SUCCESS: Found SQLAllocEnv >>> >>> Location of odbc.ini in my system is /usr/local/unixODBC/etc/odbc.ini and >>> its content is >>> [Hive] >>> Driver = /usr/local/unixODBC/lib/libodbchive.so >>> Description = Hive Driver v1 >>> DATABASE = default >>> HOST = localhost >>> PORT = 10000 >>> FRAMED = 0 >>> >>> Ouput of odbcinst -j is >>> unixODBC 2.2.14 >>> DRIVERS............: /usr/local/unixODBC/etc/odbcinst.ini >>> SYSTEM DATA SOURCES: /usr/local/unixODBC/etc/odbc.ini >>> FILE DATA SOURCES..: /usr/local/unixODBC/etc/ODBCDataSources >>> USER DATA SOURCES..: /root/.odbc.ini >>> SQLULEN Size.......: 4 >>> SQLLEN Size........: 4 >>> SQLSETPOSIROW Size.: 2 >>> >>> And output of odbcinst -q -s -n Hive is: >>> [Hive] >>> Driver=/usr/local/unixODBC/lib/libodbchive.so >>> Description=Hive Driver v1 >>> DATABASE=default >>> HOST=localhost >>> PORT=10000 >>> FRAMED=0 >>> >>> Can anybody help me with this error? >>> Thanks in advance >>> Ariel >>> >>> >>> >> >> >
