[ https://issues.apache.org/jira/browse/PHOENIX-4214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vincent Poon updated PHOENIX-4214: ---------------------------------- Attachment: PHOENIX-4214.master.v2.patch PHOENIX-4214-0.98-v2.patch [~jamestaylor] Attaching an updated v2 patches for Master and 0.98. Tests pass on 4.x-HBase-1.1 and 4.x-HBase-0.98 Main changes were - moving the scanReferenceCounter increment back into the try/finally block to ensure the scanner gets closed, by introducing a new boolean. - setting the client retries limit properly, and tweaking the test timeouts BTW, with [~samarthjain] 's help, I found that the HBase client does retry transparently when the exception is thrown from doPostScannerOpen when a region is splitting/closing, as long as the client retry settings are set properly. > Scans which write should not block region split or close > -------------------------------------------------------- > > Key: PHOENIX-4214 > URL: https://issues.apache.org/jira/browse/PHOENIX-4214 > Project: Phoenix > Issue Type: Bug > Affects Versions: 4.12.0 > Reporter: Vincent Poon > Assignee: Vincent Poon > Attachments: PHOENIX-4214-0.98-v2.patch, > PHOENIX-4214-4.x-HBase-0.98_v1.patch, PHOENIX-4214.master.v1.patch, > PHOENIX-4214.master.v2.patch, splitDuringUpsertSelect_wip.patch > > > PHOENIX-3111 introduced a scan reference counter which is checked during > region preSplit and preClose. However, a steady stream of UPSERT SELECT or > DELETE can keep the count above 0 indefinitely, preventing or greatly > delaying a region split or close. > We should try to avoid starvation of the split / close request, and > fail/reject queries where appropriate. -- This message was sent by Atlassian JIRA (v6.4.14#64029)