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https://issues.apache.org/jira/browse/HDFS-3381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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surendra singh lilhore updated HDFS-3381:
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Summary: BK JM : After restart bookkeeper continuously throwing error
because BK JM create all Namenode related znode under '/ledgers' znode. (was:
BK JM : After restart bookkeeper continuously throwing error because BK JM
create all Namenode related znode under '/ledger' znode.)
> BK JM : After restart bookkeeper continuously throwing error because BK JM
> create all Namenode related znode under '/ledgers' 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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