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From "Denys Vergiles (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-19314) Column family with name "=" cause region in transition
Date Tue, 21 Nov 2017 10:11:01 GMT
Denys Vergiles created HBASE-19314:
--------------------------------------

             Summary: Column family with name  "=" cause region in transition
                 Key: HBASE-19314
                 URL: https://issues.apache.org/jira/browse/HBASE-19314
             Project: HBase
          Issue Type: Bug
          Components: Region Assignment
    Affects Versions: 1.2.0
         Environment: Server - AWS r4.2xlarge - 8 cores, 60 Gb RAM
OS - CentOS 7
Java - 1.8.0_121
HBase Version 1.2.0

            Reporter: Denys Vergiles


During  alter  operation with namespaces i was able to create new column family with name
'='.
I didn't find any restriction in setting column name to non-alphabetical sign.

Once column name is created,  master server is fails to start due to infinite transition status
of region server


The only possible solution which i found was to delete broken  column families.
On attempt to clear status of all ephemeral nodes in zookeeper, did not allow to bring server
back to life (https://community.cloudera.com/t5/Storage-Random-Access-HDFS/HBase-Region-in-Transition/m-p/26727#M1183)

hbase hbck
{code}
17/11/14 13:31:16 INFO util.HBaseFsck: Handling overlap merges in parallel. set hbasefsck.overlap.merge.parallel
to false to run serially.
ERROR: There is a hole in the region chain between  and .  You need to create a new .regioninfo
and region dir in hdfs to plug the hole.
ERROR: Found inconsistency in table some_namespace:points
{code}

Table example
{code}
escribe 'some_namespace:points'
Table some_namespace:points is ENABLED                                                   
                                                                                         
                                
some_namespace:points, {TABLE_ATTRIBUTES => {coprocessor$1 => 'hdfs://localhost:9000/test/coprocessor.jar%7Ccoprocessor%7C107374182
3|', METADATA => {'HBASE_NAMESPACE' => 'some_namespace', 'KAFKA_BROKERS_IDS' => '/brokers/ids',
'KAFKA_TOPIC' => 'coprocessor-data', 'points_TO_GROUP_TTL' => '3600', 'ZOOKEEPER_ROOT'
=> '/'}}    
COLUMN FAMILIES DESCRIPTION                                                              
                                                                                         
                       
{NAME => '=', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS
=> 'FALSE', DATA_BLOCK_ENCODING => 'DIFF', TTL => 'FOREVER', COMPRESSION => 'NONE',
MIN_VERSIONS => '0', BLOC
KCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}               
                                                                                         
                                
{NAME => 'i', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS
=> 'FALSE', DATA_BLOCK_ENCODING => 'DIFF', TTL => 'FOREVER', COMPRESSION => 'NONE',
MIN_VERSIONS => '0', BLOC
KCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}               
                                                                                         
                                
{NAME => 'm', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS
=> 'FALSE', DATA_BLOCK_ENCODING => 'DIFF', TTL => 'FOREVER', COMPRESSION => 'NONE',
MIN_VERSIONS => '0', BLOC
KCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}
{code}



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