FAQ
Shall we put up a 0.20.2 candidate? Below are fixes since 0.20.1. There
are a couple of nasty bugs fixed: e.g. HBASE-1949, HBASE-1781, HBASE-1927
and HBASE-1908 in particular?

Also, do folks think it confusing putting out an hbase 0.20.2 when hadoop is
currently at 0.20.1 only? (Just asking).
St.Ack


Release 0.20.2 - Unreleased
INCOMPATIBLE CHANGES

BUG FIXES
HBASE-1905 Remove unused config. hbase.hstore.blockCache.blockSize
HBASE-1906 FilterList of prefix and columnvalue not working properly
with deletes and multiple values
HBASE-1896 WhileMatchFilter.reset should call encapsulated filter reset
HBASE-1912 When adding a secondary index to an existing table, it will
cause NPE during re-indexing (Mingjui Ray Liao via Andrew
Purtell)
HBASE-1917 TestScanner.testFilters failing
HBASE-1908 ROOT not reassigned if only one regionserver left
HBASE-1916 FindBugs and javac warnings cleanup
HBASE-1924 MapReduce Driver lost hsf2sf backporting hbase-1684
HBASE-1777 column length is not checked before saved to memstore
HBASE-1895 HConstants.MAX_ROW_LENGTH is incorrectly 64k, should be 32k
HBASE-1925 IllegalAccessError: Has not been initialized
(getMaxSequenceId)
HBASE-1929 If hbase-default.xml is not in CP, zk session timeout is 10
secs!
HBASE-1927 Scanners not closed properly in certain circumstances
HBASE-1934 NullPointerException in ClientScanner (Andrew Purtell via
Stack)
HBASE-1946 Unhandled exception at regionserver (Dmitriy Lyfar via Stack)
HBASE-1941 Put's copy feature has a bug (Dave Latham via Stack)
HBASE-1682 IndexedRegion does not properly handle deletes
(Andrew McCall via Clint Morgan and Stack)
HBASE-1953 Overhaul of overview.html (html fixes, typos, consistency) -
no content changes (Lars Francke via Stack)
HBASE-1954 Transactional scans do not see newest put (Clint Morgan via
Stack)
HBASE-1919 code: HRS.delete seems to ignore exceptions it shouldnt
HBASE-1951 Stack overflow when calling HTable.checkAndPut()
when deleting a lot of values
HBASE-1781 Weird behavior of WildcardColumnTracker.checkColumn(),
looks like recursive loop
HBASE-1949 KeyValue expiration by Time-to-Live during major compaction
is
broken (Gary Helmling via Stack)
HBASE-1957 Get-s can't set a Filter (Roman Kalyakin via Stack)

IMPROVEMENTS
HBASE-1899 Use scanner caching in shell count
HBASE-1903 Enable DEBUG by default
HBASE-1918 Don't do DNS resolving in .META. scanner for each row
HBASE-1921 When the Master's session times out and there's only one,
cluster is wedged
HBASE-1947 If HBase starts/stops often in less than 24 hours,
you end up with lots of store files

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  • Jean-Daniel Cryans at Nov 6, 2009 at 10:40 pm
    I don't find it confusing.

    I think we should wait a bit to see what exactly the issue is with
    Joost's multiple assignment of META.

    J-D
    On Fri, Nov 6, 2009 at 2:26 PM, stack wrote:
    Shall we put up a 0.20.2 candidate?  Below are fixes since 0.20.1.  There
    are a couple of nasty bugs fixed: e.g. HBASE-1949, HBASE-1781, HBASE-1927
    and HBASE-1908 in particular?

    Also, do folks think it confusing putting out an hbase 0.20.2 when hadoop is
    currently at 0.20.1 only? (Just asking).
    St.Ack


    Release 0.20.2 - Unreleased
    INCOMPATIBLE CHANGES

    BUG FIXES
    HBASE-1905  Remove unused config. hbase.hstore.blockCache.blockSize
    HBASE-1906  FilterList of prefix and columnvalue not working properly
    with deletes and multiple values
    HBASE-1896  WhileMatchFilter.reset should call encapsulated filter reset
    HBASE-1912  When adding a secondary index to an existing table, it will
    cause NPE during re-indexing (Mingjui Ray Liao via Andrew
    Purtell)
    HBASE-1917  TestScanner.testFilters failing
    HBASE-1908  ROOT not reassigned if only one regionserver left
    HBASE-1916  FindBugs and javac warnings cleanup
    HBASE-1924  MapReduce Driver lost hsf2sf backporting hbase-1684
    HBASE-1777  column length is not checked before saved to memstore
    HBASE-1895  HConstants.MAX_ROW_LENGTH is incorrectly 64k, should be 32k
    HBASE-1925  IllegalAccessError: Has not been initialized
    (getMaxSequenceId)
    HBASE-1929  If hbase-default.xml is not in CP, zk session timeout is 10
    secs!
    HBASE-1927  Scanners not closed properly in certain circumstances
    HBASE-1934  NullPointerException in ClientScanner (Andrew Purtell via
    Stack)
    HBASE-1946  Unhandled exception at regionserver (Dmitriy Lyfar via Stack)
    HBASE-1941  Put's copy feature has a bug (Dave Latham via Stack)
    HBASE-1682  IndexedRegion does not properly handle deletes
    (Andrew McCall via Clint Morgan and Stack)
    HBASE-1953  Overhaul of overview.html (html fixes, typos, consistency) -
    no content changes (Lars Francke via Stack)
    HBASE-1954  Transactional scans do not see newest put (Clint Morgan via
    Stack)
    HBASE-1919  code: HRS.delete seems to ignore exceptions it shouldnt
    HBASE-1951  Stack overflow when calling HTable.checkAndPut()
    when deleting a lot of values
    HBASE-1781  Weird behavior of WildcardColumnTracker.checkColumn(),
    looks like recursive loop
    HBASE-1949  KeyValue expiration by Time-to-Live during major compaction
    is
    broken (Gary Helmling via Stack)
    HBASE-1957  Get-s can't set a Filter (Roman Kalyakin via Stack)

    IMPROVEMENTS
    HBASE-1899  Use scanner caching in shell count
    HBASE-1903  Enable DEBUG by default
    HBASE-1918  Don't do DNS resolving in .META. scanner for each row
    HBASE-1921  When the Master's session times out and there's only one,
    cluster is wedged
    HBASE-1947  If HBase starts/stops often in less than 24 hours,
    you end up with lots of store files
  • Stack at Nov 6, 2009 at 10:55 pm

    On Fri, Nov 6, 2009 at 2:40 PM, Jean-Daniel Cryans wrote:
    I think we should wait a bit to see what exactly the issue is with
    Joost's multiple assignment of META.
    OK. I'll commit whats outstanding so Joost issue is only thing in the way
    of an RC. If not enough info to figure Joost issue, I reckon we should
    just go ahead w/ a 0.20.2.

    Good stuff,
    St.Ack

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groupdev @
categorieshbase, hadoop
postedNov 6, '09 at 10:26p
activeNov 6, '09 at 10:55p
posts3
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websitehbase.apache.org

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