----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/3661/#review4819 -----------------------------------------------------------
bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Bookie.java <https://reviews.apache.org/r/3661/#comment10582> suppose the code running in journalLayoutVersion=1 directory. the first time is OK, since there would be no meta entries. but the code would add meta entries then. the next time bookie restarts, journalLayoutVersion is still 1, it would throw IOException. so do we need to upgrade the layout version when we run new code in old data directories? bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Bookie.java <https://reviews.apache.org/r/3661/#comment10583> if a ledger existed before, getHandle would checkAccess of masterKey, which would call FileInfo#readHeader. Then isMasterKeyPersisted would call FileInfo#readHeader again, which is not necessary. I think it would be easy to avoid readHeader twice. - Sijie On 2012-01-27 14:54:04, Ivan Kelly wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/3661/ > ----------------------------------------------------------- > > (Updated 2012-01-27 14:54:04) > > > Review request for bookkeeper. > > > Summary > ------- > > This is an optimization to speed up the case where we have many ledgers and > are writing to them at random (a benchmark case we currently have). > Currently, we create the ledger index file and write the first 1k of it to > disk immediately. With a lot of ledgers being randomly written to, this means > a lot of random writes on the ledger disk. This fix postpones the creation of > the index file and writing of the first 1k until the first flush of the > ledger. > > This patch includes BOOKKEEPER-136, as they both deal in the same area, and I > found it difficult to separate them. > > BOOKKEEPER-135 is not required for this patch, and will need modifications > after this goes in. > > > This addresses bug BOOKKEEPER-137. > https://issues.apache.org/jira/browse/BOOKKEEPER-137 > > > Diffs > ----- > > bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Bookie.java > cb3bb26 > bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/FileInfo.java > fa713c8 > > bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/LedgerCache.java > d2f959b > > bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/LedgerDescriptor.java > 728d729 > > bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/BookieServer.java > beab5e8 > > bookkeeper-server/src/main/java/org/apache/bookkeeper/util/LocalBookKeeper.java > 5706dd8 > > bookkeeper-server/src/test/java/org/apache/bookkeeper/bookie/BookieLayoutVersionTest.java > c7b07e6 > > bookkeeper-server/src/test/java/org/apache/bookkeeper/client/BookieRecoveryTest.java > 8526db5 > > bookkeeper-server/src/test/java/org/apache/bookkeeper/test/BaseTestCase.java > 7403604 > > Diff: https://reviews.apache.org/r/3661/diff > > > Testing > ------- > > > Thanks, > > Ivan > >
