I am running a standalone HBase server on a remote machine and tries
to create tables using a Java client program.
In the code, if the table already exists, then the table will be
disabled and deleted and then get recreated.
In the client log below, table "room" get disabled and deleted, but when
creating the table, there is an exception
(org.apache.hadoop.hbase.client.NoServerForRegionException).
2010-09-23 15:57:35,562 DEBUG [main]
client.HConnectionManager$TableServers(690): locateRegionInMeta attempt
0 of 10 failed; retrying after sleep of 2000
org.apache.hadoop.hbase.client.NoServerForRegionException: No server
address listed in .META. for region room,,1285271855622
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:668)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:594)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:557)
at
org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:169)
After the exception, the table "room" will still be created. But I
wonder what is causing the exception. Why does it say "No server address
listed in .META."?
Thank you very much for your help,
Katharine
==========================================
2010-09-23 15:57:33,125 DEBUG [main-EventThread]
client.HConnectionManager$ClientZKWatcher(189): Got ZooKeeper event,
state: SyncConnected, type: None, path: null
2010-09-23 15:57:33,125 DEBUG [main] zookeeper.ZooKeeperWrapper(336):
Read ZNode /hbase/master got 141.212.113.36:60000
2010-09-23 15:57:33,234 DEBUG [main] zookeeper.ZooKeeperWrapper(336):
Read ZNode /hbase/root-region-server got 141.212.113.36:56744
2010-09-23 15:57:33,250 DEBUG [main]
client.HConnectionManager$TableServers(941): Found ROOT at
141.212.113.36:56744
2010-09-23 15:57:33,250 DEBUG [main]
client.HConnectionManager$TableServers(849): Cached location address:
141.212.113.36:56744, regioninfo: REGION => {NAME => '.META.,,1',
STARTKEY => '', ENDKEY => '', ENCODED => 1028785192, TABLE => {{NAME =>
'.META.', IS_META => 'true', MEMSTORE_FLUSHSIZE => '16384', FAMILIES =>
[{NAME => 'historian', VERSIONS => '2147483647', COMPRESSION => 'NONE',
TTL => '604800', BLOCKSIZE => '8192', IN_MEMORY => 'false', BLOCKCACHE
=> 'false'}, {NAME => 'info', VERSIONS => '10', COMPRESSION => 'NONE',
TTL => '2147483647', BLOCKSIZE => '8192', IN_MEMORY => 'true',
BLOCKCACHE => 'true'}]}}
2010-09-23 15:57:33,281 DEBUG [main]
client.HConnectionManager$TableServers(733): Cache hit for row<> in
tableName .META.: location server 141.212.113.36:56744, location region
name .META.,,1
2010-09-23 15:57:33,296 DEBUG [main] zookeeper.ZooKeeperWrapper(336):
Read ZNode /hbase/root-region-server got 141.212.113.36:56744
2010-09-23 15:57:33,296 DEBUG [main]
client.HConnectionManager$TableServers(941): Found ROOT at
141.212.113.36:56744
2010-09-23 15:57:33,296 DEBUG [main]
client.HConnectionManager$TableServers(849): Cached location address:
141.212.113.36:56744, regioninfo: REGION => {NAME => '.META.,,1',
STARTKEY => '', ENDKEY => '', ENCODED => 1028785192, TABLE => {{NAME =>
'.META.', IS_META => 'true', MEMSTORE_FLUSHSIZE => '16384', FAMILIES =>
[{NAME => 'historian', VERSIONS => '2147483647', COMPRESSION => 'NONE',
TTL => '604800', BLOCKSIZE => '8192', IN_MEMORY => 'false', BLOCKCACHE
=> 'false'}, {NAME => 'info', VERSIONS => '10', COMPRESSION => 'NONE',
TTL => '2147483647', BLOCKSIZE => '8192', IN_MEMORY => 'true',
BLOCKCACHE => 'true'}]}}
2010-09-23 15:57:33,312 DEBUG [main]
client.HConnectionManager$TableServers(510): Rowscanned=1, rowsOffline=0
2010-09-23 15:57:33,312 DEBUG [main] client.HBaseAdmin(397): Sleep.
Waiting for all regions to be disabled from room
2010-09-23 15:57:35,312 DEBUG [main] client.HBaseAdmin(406): Wake.
Waiting for all regions to be disabled from room
2010-09-23 15:57:35,312 DEBUG [main]
client.HConnectionManager$TableServers(733): Cache hit for row<> in
tableName .META.: location server 141.212.113.36:56744, location region
name .META.,,1
2010-09-23 15:57:35,328 DEBUG [main]
client.HConnectionManager$TableServers(510): Rowscanned=1, rowsOffline=1
2010-09-23 15:57:35,328 INFO [main] client.HBaseAdmin(414): Disabled room
2010-09-23 15:57:35,359 INFO [main] client.HBaseAdmin(302): Deleted room
2010-09-23 15:57:35,562 DEBUG [main]
client.HConnectionManager$TableServers(690): locateRegionInMeta attempt
0 of 10 failed; retrying after sleep of 2000
org.apache.hadoop.hbase.client.NoServerForRegionException: No server
address listed in .META. for region room,,1285271855622
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:668)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:594)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:557)
at
org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:169)
2010-09-23 15:57:35,562 DEBUG [main]
client.HConnectionManager$TableServers(810): Removed .META.,,1 for
tableName=.META. from cache because of room,,99999999999999
2010-09-23 15:57:35,578 DEBUG [main]
client.HConnectionManager$TableServers(849): Cached location address:
141.212.113.36:56744, regioninfo: REGION => {NAME => '.META.,,1',
STARTKEY => '', ENDKEY => '', ENCODED => 1028785192, TABLE => {{NAME =>
'.META.', IS_META => 'true', MEMSTORE_FLUSHSIZE => '16384', FAMILIES =>
[{NAME => 'historian', VERSIONS => '2147483647', COMPRESSION => 'NONE',
TTL => '604800', BLOCKSIZE => '8192', IN_MEMORY => 'false', BLOCKCACHE
=> 'false'}, {NAME => 'info', VERSIONS => '10', COMPRESSION => 'NONE',
TTL => '2147483647', BLOCKSIZE => '8192', IN_MEMORY => 'true',
BLOCKCACHE => 'true'}]}}
2010-09-23 15:57:37,578 DEBUG [main]
client.HConnectionManager$TableServers(849): Cached location address:
141.212.113.36:56744, regioninfo: REGION => {NAME =>
'room,,1285271855622', STARTKEY => '', ENDKEY => '', ENCODED =>
937432431, TABLE => {{NAME => 'room', FAMILIES => [{NAME => 'usersName',
COMPRESSION => 'NONE', VERSIONS => '1', TTL => '2147483647', BLOCKSIZE
=> '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}]}}
2010-09-23 15:57:37,578 DEBUG [main] zookeeper.ZooKeeperWrapper(336):
Read ZNode /hbase/root-region-server got 141.212.113.36:56744
2010-09-23 15:57:37,593 DEBUG [main]
client.HConnectionManager$TableServers(941): Found ROOT at
141.212.113.36:56744
2010-09-23 15:57:37,593 DEBUG [main]
client.HConnectionManager$TableServers(849): Cached location address:
141.212.113.36:56744, regioninfo: REGION => {NAME => '.META.,,1',
STARTKEY => '', ENDKEY => '', ENCODED => 1028785192, TABLE => {{NAME =>
'.META.', IS_META => 'true', MEMSTORE_FLUSHSIZE => '16384', FAMILIES =>
[{NAME => 'historian', VERSIONS => '2147483647', COMPRESSION => 'NONE',
TTL => '604800', BLOCKSIZE => '8192', IN_MEMORY => 'false', BLOCKCACHE
=> 'false'}, {NAME => 'info', VERSIONS => '10', COMPRESSION => 'NONE',
TTL => '2147483647', BLOCKSIZE => '8192', IN_MEMORY => 'true',
BLOCKCACHE => 'true'}]}}
2010-09-23 15:57:37,593 DEBUG [main]
client.HConnectionManager$TableServers(849): Cached location address:
141.212.113.36:56744, regioninfo: REGION => {NAME =>
'room,,1285271855622', STARTKEY => '', ENDKEY => '', ENCODED =>
937432431, TABLE => {{NAME => 'room', FAMILIES => [{NAME => 'usersName',
COMPRESSION => 'NONE', VERSIONS => '1', TTL => '2147483647', BLOCKSIZE
=> '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}]}}
