We can't delete properties of column family. Either you have to use the
default value or we can set it to particular value.
Let's say if we want to remove bloom filter property we can set the value
to NONE. means. Bloom filter is not applied while preparing HFile. it can
acccept values[NONE(default value), ROW, ROWCOL].
Hope my explanation make sense. Happy new year 2018.
Thank you,
Naresh
On Mon, Jan 1, 2018 at 10:49 AM Ted Yu <yuzhih...@gmail.com> wrote:
> Not sure what you meant by deleting bloom filter type.
> Bloom filter type is used when constructing store file. See the following
> in HStore:
>
> private HStoreFile createStoreFileAndReader(StoreFileInfo info) throws
> IOException {
>
> info.setRegionCoprocessorHost(this.region.getCoprocessorHost());
>
> HStoreFile storeFile = new HStoreFile(this.getFileSystem(), info, this.
> conf, this.cacheConf,
>
> this.family.getBloomFilterType(), isPrimaryReplicaStore());
>
>
> If you want to use a different bloom filter, you can issue this command:
>
>
> alter 'test', { NAME => 'cf', BLOOMFILTER => 'ROW' }
>
>
> Cheers
>
> On Mon, Jan 1, 2018 at 6:22 AM, Jean-Marc Spaggiari <
> jean-m...@spaggiari.org
> > wrote:
>
> > Hi,
> >
> > What is the magic to delete a CF parameter?
> >
> > Like in this example:
> > hbase(main):033:0> desc 'table'
> > Table dns is ENABLED
> >
> >
> >
> >
> > table
> >
> >
> >
> >
> > COLUMN FAMILIES DESCRIPTION
> >
> >
> >
> >
> > {NAME => '@', VERSIONS => '1', EVICT_BLOCKS_ON_CLOSE => 'false',
> > NEW_VERSION_BEHAVIOR => 'false', KEEP_DELETED_CELLS => 'false',
> > CACHE_DATA_ON_WRITE => 'false', DATA_BLOCK_ENCODING => 'NONE', TTL =>
> > 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0', BLOOMFILTER =>
> > 'NONE', CACHE_INDEX_ON_WRITE => 'false', IN_MEM
> > ORY => 'false', CACHE_BLOOMS_ON_WRITE => 'false', PREFETCH_BLOCKS_ON_OPEN
> > => 'false', COMPRESSION => 'SNAPPY', BLOCKCACHE => 'true', BLOCKSIZE =>
> > '65536', METADATA => {'ENCODE_ON_DISK' => 'true'}}
> >
> >
> > 1 row(s)
> > Took 0.0368 seconds
> >
> >
> >
> >
> > I want to remove the BLOOMFILTER => 'NONE', parameter that I have set. I
> > found how to remove the CF, table parameters and options, etc. But I have
> > not found how to delete the CF parameter. IIRC there was something with
> > :NILL or similar, but I'm not 100% sure.
> >
> > In any case, I feel this should be better documented :(
> >
> > JMS
> >
>
