I am on Cassandra 2.0.5. How can I use the trace functionality? I did not check for exceptions. I will rerun and check.
Thanks for suggestions. /Joel 2014-03-07 17:54 GMT+01:00 Duncan Sands <duncan.sa...@gmail.com>: > Hi Joel, > > > On 07/03/14 15:22, Joel Samuelsson wrote: > >> I try to fetch all the row keys from a column family (there should only >> be a >> couple of hundred in that CF) in several different ways but I get timeouts >> whichever way I try: >> > > did you check the node logs for exceptions? You can get this kind of > thing if there is an assertion failure when reading a particular row due to > corruption for example. > > Ciao, Duncan. > > > >> Through the cassandra cli: >> Fetching 45 rows is fine: >> list cf limit 46 columns 0; >> . >> . >> . >> 45 Rows Returned. >> Elapsed time: 298 msec(s). >> >> Fetching 46 rows however gives me a timeout after a minute or so: >> list cf limit 46 columns 0; >> null >> TimedOutException()... >> >> Through pycassa: >> keys = cf.get_range(column_count = 1, buffer_size = 2) >> >> for key, val in keys: >> print key >> >> This prints some keys and then gets stuck at the same place each time and >> then >> timeouts. >> >> The columns (column names + value) in the rows should be less than 100 >> bytes >> each, though there may be a lot of them on a particular row. >> >> To me it seems like one of the rows take too long time to fetch but I >> don't know >> why since I am limitiing the number of columns to 0. Without seeing the >> row, I >> have a hard time knowing what could be wrong. Do you have any ideas? >> >> >> >
