hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Stack <st...@duboce.net>
Subject Re: meta region written by 2.0 cannot be opened by 1.x
Date Tue, 06 Dec 2016 19:57:00 GMT
On Tue, Dec 6, 2016 at 10:19 AM, Ted Yu <yuzhihong@gmail.com> wrote:

> Looking at http://hbase.apache.org/book.html#executing.the.0.96.upgrade ,
> there is step of running "bin/hbase upgrade -check"
>
> How about adding a sample hfile which contains
> CellComparator$MetaCellComparator
> so that the upgrade check can read and verify ?
>
>

We don't support downgrade. Never have.
St.Ack



> On Tue, Dec 6, 2016 at 8:50 AM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > The build I used yesterday didn't include HBASE-16189
> > <https://issues.apache.org/jira/browse/HBASE-16189>
> >
> > Once it is included, the cluster can be downgraded fine.
> >
> > I wonder how users would know that their existing deployment has
> > HBASE-16189 <https://issues.apache.org/jira/browse/HBASE-16189> before
> > upgrading to 2.0 release.
> >
> > On Tue, Dec 6, 2016 at 2:29 AM, ramkrishna vasudevan <
> > ramkrishna.s.vasudevan@gmail.com> wrote:
> >
> >> @Ted
> >> Does your version have this fix
> >> https://issues.apache.org/jira/browse/HBASE-16189
> >>
> >> Regards
> >> Ram
> >>
> >> On Tue, Dec 6, 2016 at 3:56 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> >>
> >> > Is the assumption that hbase:meta would not split ?
> >> >
> >> > In other thread, Francis Liu was proposing supporting splittable
> >> > hbase:meta in 2.0 release.
> >> >
> >> > Cheers
> >> >
> >> > > On Dec 6, 2016, at 2:20 AM, 张铎 <palomino219@gmail.com> wrote:
> >> > >
> >> > > Could this be solved by hosting meta only on master?
> >> > >
> >> > > BTW, MetaCellComparator is introduced in HBASE-10800.
> >> > >
> >> > > Thanks.
> >> > >
> >> > > 2016-12-06 17:44 GMT+08:00 Ted Yu <yuzhihong@gmail.com>:
> >> > >
> >> > >> Hi,
> >> > >> When I restarted a cluster with 1.1 , I found that hbase:meta
> region
> >> > >> (written to by the previously deployed 2.0) couldn't be opened:
> >> > >>
> >> > >> Caused by: java.io.IOException:
> >> > >> org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem
> >> reading
> >> > >> HFile Trailer from file hdfs://yz1.xx.com:8020/apps/
> >> hbase/data/data/
> >> > >> hbase/meta/1588230740/info/599fc8a37311414e876803312009a986
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore.openStoreFiles(
> >> HStore.java:
> >> > >> 579)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore.loadStoreFiles(
> >> HStore.java:
> >> > >> 534)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore.<init>(
> HStore.java:275)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HRegion.instantiateHSto
> >> re(HRegion.
> >> > >> java:5150)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.
> >> java:912)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.
> >> java:909)
> >> > >>        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> >> > >>        at
> >> > >> java.util.concurrent.Executors$RunnableAdapter.call(
> >> Executors.java:511)
> >> > >>        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> >> > >>        ... 3 more
> >> > >> Caused by: org.apache.hadoop.hbase.io.hfile.CorruptHFileException:
> >> > Problem
> >> > >> reading HFile Trailer from file hdfs://
> >> > >> yz1.xx.com:8020/apps/hbase/data/data/hbase/ meta/1588230740/
> >> > >> info/599fc8a37311414e876803312009a986
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion(
> >> > HFile.java:483)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.HFile.createReader(
> HFile.java:511)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.StoreFile$Reader.
> >> > >> <init>(StoreFile.java:1128)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.StoreFileInfo.
> >> > >> open(StoreFileInfo.java:267)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.StoreFile.open(StoreFil
> >> e.java:409)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.StoreFile.
> >> > >> createReader(StoreFile.java:517)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore.createStoreFileA
> >> ndReader(
> >> > >> HStore.java:687)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore.access$000(
> >> HStore.java:130)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore$1.call(
> HStore.java:554)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.regionserver.HStore$1.call(
> HStore.java:551)
> >> > >>        ... 6 more
> >> > >> Caused by: java.io.IOException: java.lang.ClassNotFoundException:
> >> > >> org.apache.hadoop.hbase.CellComparator$MetaCellComparator
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getCompara
> >> torClass(
> >> > >> FixedFileTrailer.java:581)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.
> deserializeFromPB(
> >> > >> FixedFileTrailer.java:300)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.
> >> > >> deserialize(FixedFileTrailer.java:242)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(
> >> > >> FixedFileTrailer.java:407)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion(
> >> > HFile.java:468)
> >> > >>        ... 15 more
> >> > >> Caused by: java.lang.ClassNotFoundException:
> >> > >> org.apache.hadoop.hbase.CellComparator$MetaCellComparator
> >> > >>        at java.net.URLClassLoader.findClass(URLClassLoader.java:
> 381)
> >> > >>        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> >> > >>        at sun.misc.Launcher$AppClassLoader.loadClass(
> Launcher.java:
> >> 331)
> >> > >>        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> >> > >>        at java.lang.Class.forName0(Native Method)
> >> > >>        at java.lang.Class.forName(Class.java:264)
> >> > >>        at
> >> > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getCompara
> >> torClass(
> >> > >> FixedFileTrailer.java:579)
> >> > >>
> >> > >> When user does rolling upgrade from 1.1 to 2.0, the above may
cause
> >> > problem
> >> > >> if hbase:meta region is updated by server running 2.0 but later
> >> > assigned to
> >> > >> a region server which still runs 1.1 (due to crash of the server
> >> running
> >> > >> 2.0, e.g.)
> >> > >>
> >> > >> I want to get community feedback on the severity of this issue.
> >> > >>
> >> > >> Thanks
> >> > >>
> >> >
> >>
> >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message