[ https://issues.apache.org/jira/browse/HBASE-6856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Iancu updated HBASE-6856: -------------------------------- Description: In some situations clients that fetch data from a RS get a LeaseException instead of the usual ScannerTimeoutException/UnknownScannerException. This particular case should be documented in the HBase guide. Some key points * the source of exception is: org.apache.hadoop.hbase.regionserver.Leases.removeLease(Leases.java:230) * it happens in the context of a slow/freezing RS#next * it can be prevented by having hbase.rpc.timeout > hbase.regionserver.lease.period Harsh J investigated the issue and has some conclusions, see http://mail-archives.apache.org/mod_mbox/hbase-user/201209.mbox/%3CCAOcnVr3R-LqtKhFsk8Bhrm-YW2i9O6J6Fhjz2h7q6_sxvwd2yw%40mail.gmail.com%3E was: In some situations clients that fetch data from a RS get a LeaseException instead of the usual ScannerTimeoutException/UnknownScannerException. This particular case should be documented in the HBase guide. Some key points * the source of exception is: org.apache.hadoop.hbase.regionserver.Leases.removeLease(Leases.java:230) * it happens in the context of a slow/freezing RS#next * it can be prevented by having hbase.rpc.timeout > hbase.regionserver.lease.period Harsh J investigated the issue and has some conclusions, see http://mail-archives.apache.org/mod_mbox/hbase-user/201209.mbox/browser > Document the LeaseException thrown in scanner next > -------------------------------------------------- > > Key: HBASE-6856 > URL: https://issues.apache.org/jira/browse/HBASE-6856 > Project: HBase > Issue Type: Improvement > Components: documentation > Affects Versions: 0.92.0 > Reporter: Daniel Iancu > Labels: LeaseException > > In some situations clients that fetch data from a RS get a LeaseException > instead of the usual ScannerTimeoutException/UnknownScannerException. > This particular case should be documented in the HBase guide. > Some key points > * the source of exception is: > org.apache.hadoop.hbase.regionserver.Leases.removeLease(Leases.java:230) > * it happens in the context of a slow/freezing RS#next > * it can be prevented by having hbase.rpc.timeout > > hbase.regionserver.lease.period > Harsh J investigated the issue and has some conclusions, see > http://mail-archives.apache.org/mod_mbox/hbase-user/201209.mbox/%3CCAOcnVr3R-LqtKhFsk8Bhrm-YW2i9O6J6Fhjz2h7q6_sxvwd2yw%40mail.gmail.com%3E -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira