[jira] [Updated] (HIVE-18589) java.io.IOException: Not enough history available
[ https://issues.apache.org/jira/browse/HIVE-18589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eugene Koifman updated HIVE-18589: -- Resolution: Fixed Fix Version/s: 3.0.0 Status: Resolved (was: Patch Available) committed to master thanks Gopal for the review > java.io.IOException: Not enough history available > - > > Key: HIVE-18589 > URL: https://issues.apache.org/jira/browse/HIVE-18589 > Project: Hive > Issue Type: Bug > Components: Transactions >Affects Versions: 3.0.0 >Reporter: Eugene Koifman >Assignee: Eugene Koifman >Priority: Critical > Fix For: 3.0.0 > > Attachments: HIVE-18589.01.patch, HIVE-18589.02.patch > > > txnid:17 starts reading T2/P1 > txnid:20 does insert overwrite T1/P1, creates base_20, commits. txnid:17 > still running > txnid:21 stars reading T1/P1. It's ValidTxnList will txnid:17 as open. > before Insert overwrite was supported, only the compactor could produce > base_20 by running major compaction. Major compaction erases history and so > a reader with txnid:17 open, can't use base_20. > Normally, the Cleaner is smart enough to not clean pre-compaction files if > it's possible that there is a reader that requires them. There is a safety > check that creates "Not enough history.." error if it finds that the current > reader can't properly execute based on the files available. > > with the introduction of IOW on acid tables, there is another way to produce > a base. The difference is that here, the base has no history by definition > and so the same check is not needed but is triggered in the scenario above. > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (HIVE-18589) java.io.IOException: Not enough history available
[ https://issues.apache.org/jira/browse/HIVE-18589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eugene Koifman updated HIVE-18589: -- Attachment: HIVE-18589.02.patch > java.io.IOException: Not enough history available > - > > Key: HIVE-18589 > URL: https://issues.apache.org/jira/browse/HIVE-18589 > Project: Hive > Issue Type: Bug > Components: Transactions >Affects Versions: 3.0.0 >Reporter: Eugene Koifman >Assignee: Eugene Koifman >Priority: Critical > Attachments: HIVE-18589.01.patch, HIVE-18589.02.patch > > > txnid:17 starts reading T2/P1 > txnid:20 does insert overwrite T1/P1, creates base_20, commits. txnid:17 > still running > txnid:21 stars reading T1/P1. It's ValidTxnList will txnid:17 as open. > before Insert overwrite was supported, only the compactor could produce > base_20 by running major compaction. Major compaction erases history and so > a reader with txnid:17 open, can't use base_20. > Normally, the Cleaner is smart enough to not clean pre-compaction files if > it's possible that there is a reader that requires them. There is a safety > check that creates "Not enough history.." error if it finds that the current > reader can't properly execute based on the files available. > > with the introduction of IOW on acid tables, there is another way to produce > a base. The difference is that here, the base has no history by definition > and so the same check is not needed but is triggered in the scenario above. > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (HIVE-18589) java.io.IOException: Not enough history available
[ https://issues.apache.org/jira/browse/HIVE-18589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eugene Koifman updated HIVE-18589: -- Description: txnid:17 starts reading T2/P1 txnid:20 does insert overwrite T1/P1, creates base_20, commits. txnid:17 still running txnid:21 stars reading T1/P1. It's ValidTxnList will txnid:17 as open. before Insert overwrite was supported, only the compactor could produce base_20 by running major compaction. Major compaction erases history and so a reader with txnid:17 open, can't use base_20. Normally, the Cleaner is smart enough to not clean pre-compaction files if it's possible that there is a reader that requires them. There is a safety check that creates "Not enough history.." error if it finds that the current reader can't properly execute based on the files available. with the introduction of IOW on acid tables, there is another way to produce a base. The difference is that here, the base has no history by definition and so the same check is not needed but is triggered in the scenario above. > java.io.IOException: Not enough history available > - > > Key: HIVE-18589 > URL: https://issues.apache.org/jira/browse/HIVE-18589 > Project: Hive > Issue Type: Bug > Components: Transactions >Affects Versions: 3.0.0 >Reporter: Eugene Koifman >Assignee: Eugene Koifman >Priority: Critical > Attachments: HIVE-18589.01.patch > > > txnid:17 starts reading T2/P1 > txnid:20 does insert overwrite T1/P1, creates base_20, commits. txnid:17 > still running > txnid:21 stars reading T1/P1. It's ValidTxnList will txnid:17 as open. > before Insert overwrite was supported, only the compactor could produce > base_20 by running major compaction. Major compaction erases history and so > a reader with txnid:17 open, can't use base_20. > Normally, the Cleaner is smart enough to not clean pre-compaction files if > it's possible that there is a reader that requires them. There is a safety > check that creates "Not enough history.." error if it finds that the current > reader can't properly execute based on the files available. > > with the introduction of IOW on acid tables, there is another way to produce > a base. The difference is that here, the base has no history by definition > and so the same check is not needed but is triggered in the scenario above. > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (HIVE-18589) java.io.IOException: Not enough history available
[ https://issues.apache.org/jira/browse/HIVE-18589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eugene Koifman updated HIVE-18589: -- Attachment: HIVE-18589.01.patch > java.io.IOException: Not enough history available > - > > Key: HIVE-18589 > URL: https://issues.apache.org/jira/browse/HIVE-18589 > Project: Hive > Issue Type: Bug > Components: Transactions >Affects Versions: 3.0.0 >Reporter: Eugene Koifman >Assignee: Eugene Koifman >Priority: Critical > Attachments: HIVE-18589.01.patch > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (HIVE-18589) java.io.IOException: Not enough history available
[ https://issues.apache.org/jira/browse/HIVE-18589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eugene Koifman updated HIVE-18589: -- Status: Patch Available (was: Open) > java.io.IOException: Not enough history available > - > > Key: HIVE-18589 > URL: https://issues.apache.org/jira/browse/HIVE-18589 > Project: Hive > Issue Type: Bug > Components: Transactions >Affects Versions: 3.0.0 >Reporter: Eugene Koifman >Assignee: Eugene Koifman >Priority: Critical > Attachments: HIVE-18589.01.patch > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)