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Posted to issues@hive.apache.org by "Hive QA (Jira)" <ji...@apache.org> on 2019/11/01 03:00:00 UTC
[jira] [Commented] (HIVE-21114) Create read-only transactions
[ https://issues.apache.org/jira/browse/HIVE-21114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16964563#comment-16964563 ]
Hive QA commented on HIVE-21114:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 1s{color} | {color:green} The patch does not contain any @author tags. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 1m 44s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 7m 58s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 37s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 9s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 1m 16s{color} | {color:blue} standalone-metastore/metastore-server in master has 171 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m 4s{color} | {color:blue} ql in master has 1545 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 20s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 24s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m 2s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 26s{color} | {color:green} standalone-metastore/metastore-server: The patch generated 0 new + 552 unchanged - 3 fixed = 552 total (was 555) {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 43s{color} | {color:green} ql: The patch generated 0 new + 288 unchanged - 20 fixed = 288 total (was 308) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 5m 30s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 22s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 14s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 32m 5s{color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Optional Tests | asflicense javac javadoc findbugs checkstyle compile |
| uname | Linux hiveptest-server-upstream 3.16.0-4-amd64 #1 SMP Debian 3.16.43-2+deb8u5 (2017-09-19) x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus_PreCommit-HIVE-Build-19242/dev-support/hive-personality.sh |
| git revision | master / 9490264 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: standalone-metastore/metastore-server ql U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-19242/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Create read-only transactions
> -----------------------------
>
> Key: HIVE-21114
> URL: https://issues.apache.org/jira/browse/HIVE-21114
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 4.0.0
> Reporter: Eugene Koifman
> Assignee: Denys Kuzmenko
> Priority: Major
> Attachments: HIVE-21114.1.patch, HIVE-21114.10.patch, HIVE-21114.2.patch, HIVE-21114.3.patch, HIVE-21114.4.patch, HIVE-21114.5.patch, HIVE-21114.6.patch, HIVE-21114.7.patch, HIVE-21114.8.patch, HIVE-21114.9.patch
>
>
> With HIVE-21036 we have a way to indicate that a txn is read only.
> We should (at least in auto-commit mode) determine if the single stmt is a read and mark the txn accordingly.
> Then we can optimize {{TxnHandler.commitTxn()}} so that it doesn't do any checks in write_set etc.
> {{TxnHandler.commitTxn()}} already starts with {{lockTransactionRecord(stmt, txnid, TXN_OPEN)}} so it can read the txn type in the same SQL stmt.
> HiveOperation only has QUERY, which includes Insert and Select, so this requires figuring out how to determine if a query is a SELECT. By the time {{Driver.openTransaction();}} is called, we have already parsed the query so there should be a way to know if the statement only reads.
> For multi-stmt txns (once these are supported) we should allow user to indicate that a txn is read-only and then not allow any statements that can make modifications in this txn. This should be a different jira.
> cc [~ikryvenko]
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