surendra singh lilhore created HDFS-3381:
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Summary: BK JM : After restart bookkeeper continuously throwing
error beause BK JM create all Namenode related znode under /ledger znode.
Key: HDFS-3381
URL: https://issues.apache.org/jira/browse/HDFS-3381
Project: Hadoop HDFS
Issue Type: Improvement
Components: ha
Reporter: surendra singh lilhore
Fix For: 0.24.0
Issue :
Bookkeeper journal manager create all the Namenode related znode under
'/ledgers' znode in zookeeper. When bookkeeper read all the ledgers from
'/ledgers' znode it consider this znode (version, lock, maxtxid) as incorrect
format ledger and log following error.
{noformat}
2012-04-20 11:52:25,611 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: ledgers
2012-04-20 11:52:25,611 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: lock
2012-04-20 11:52:25,612 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: maxtxid
2012-04-20 11:52:26,613 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: version
2012-04-20 11:52:26,613 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: ledgers
2012-04-20 11:52:26,613 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: lock
2012-04-20 11:52:26,613 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: maxtxid
2012-04-20 11:52:27,614 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: version
2012-04-20 11:52:27,614 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: ledgers
2012-04-20 11:52:27,614 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: lock
2012-04-20 11:52:27,615 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: maxtxid
2012-04-20 11:52:28,616 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: version
2012-04-20 11:52:28,616 - WARN
[main-EventThread:AbstractZkLedgerManager$2@123] - Error extracting ledgerId
from ZK ledger node: ledgers
{noformat}
I think Namenode related znode should be create in separate znode in zookeeper.
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