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Kannan Muthukkaruppan commented on HBASE-5907: ---------------------------------------------- Sample run: {code} % bin/hbase org.apache.hadoop.hbase.regionserver.wal.HLog --dump <PathToHLog> --analyze === SUMMARY === Number of txns: 49398 Number of KVs: 943861 Total Size of KVs: 244004297 Avg number of KVs/txn: 19 Avg size of txn: 4939 Avg size of KV: 258 Avg CFs written to per txn: 5 Txns/sec: 380 KVs/sec: 7279 ======= CF Level Stats ====== # of KVs|CF Name 372739 test_table:cf1 257880 test_table:cf3 82845 test_table:cf2 72649 test_table:cf7 38224 test_table:cf4 36213 test_table:cf6 29446 test_table:cf10 26787 test_table:cf5 26787 test_table:cf9 288 test_table:cf8 3 test_table:METAFAMILY ===== Total KVSize|CF Name 56814996 test_table:cf3 51452389 test_table:cf6 42377022 test_table:cf1 39258289 test_table:cf4 31404256 test_table:cf2 9814939 test_table:cf7 4727038 test_table:cf9 4708267 test_table:cf10 3412347 test_table:cf5 34592 test_table:cf8 162 test_table:METAFAMILY ===== == TxnCount|Put/Delete's CF Signature == 26602 test_table:[cf1, cf2, cf3, cf4, cf5, cf6, cf7, cf9, cf10] 12247 test_table:[cf3] 9311 test_table:[cf3, cf4, cf6] 937 test_table:[cf3, cf4] 176 test_table:[cf1, cf2, cf3, cf4, cf5, cf6, cf7, cf8, cf9, cf10] 110 test_table:[cf2, cf3, cf4, cf6, cf7, cf8, cf10] 9 test_table:[cf2, cf3, cf4, cf5, cf6, cf9, cf10] 3 test_table:[METAFAMILY] 2 test_table:[cf3, cf4, cf6, cf7] 1 test_table:[cf3, cf8] =========================== {code} > enhance HLog pretty printer to print additional useful stats > ------------------------------------------------------------ > > Key: HBASE-5907 > URL: https://issues.apache.org/jira/browse/HBASE-5907 > Project: HBase > Issue Type: Improvement > Reporter: Kannan Muthukkaruppan > Priority: Minor > Attachments: D2979.1.patch, D2979.2.patch > > > It would be useful for analysis purposes to enhance the HLog pretty printer > to optionally print a bunch of additional stats such as: > 1) # of txns > 2) # of KVs updated > 3) avg size of txns > 4) avg size of KVs > 5) avg # of KVs written per txn > 5) unique CF signatures involved in put/delete operatons; and breakdown of > some of the above metrics by these signatures, etc. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira