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https://issues.apache.org/jira/browse/HIVE-19418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16498136#comment-16498136
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Hive QA commented on HIVE-19418:
--------------------------------
| (x) *{color:red}-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
0s{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} 0m
38s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m
46s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
54s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
11s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 3m
36s{color} | {color:blue} ql in master has 2278 extant Findbugs warnings.
{color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 2m
54s{color} | {color:blue} standalone-metastore in master has 214 extant
Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
55s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
9s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red} 0m
17s{color} | {color:red} hcatalog-unit in the patch failed. {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red} 0m
31s{color} | {color:red} ql in the patch failed. {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
56s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
56s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
10s{color} | {color:red} itests/hcatalog-unit: The patch generated 1 new + 27
unchanged - 0 fixed = 28 total (was 27) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
36s{color} | {color:red} ql: The patch generated 32 new + 120 unchanged - 0
fixed = 152 total (was 120) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
29s{color} | {color:red} standalone-metastore: The patch generated 16 new +
1453 unchanged - 0 fixed = 1469 total (was 1453) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 3m
52s{color} | {color:red} ql generated 4 new + 2278 unchanged - 0 fixed = 2282
total (was 2278) {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 2m
57s{color} | {color:red} standalone-metastore generated 2 new + 213 unchanged -
1 fixed = 215 total (was 214) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
54s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
12s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 33m 26s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:ql |
| | Dead store to writeIds in
org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.processOneTable(MetaStoreUtils$FullTableName)
At
StatsUpdaterThread.java:org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.processOneTable(MetaStoreUtils$FullTableName)
At StatsUpdaterThread.java:[line 221] |
| | Synchronization performed on java.util.concurrent.atomic.AtomicInteger in
org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.markAnalyzeDone(StatsUpdaterThread$AnalyzeWork)
At
StatsUpdaterThread.java:org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.markAnalyzeDone(StatsUpdaterThread$AnalyzeWork)
At StatsUpdaterThread.java:[line 501] |
| | Synchronization performed on java.util.concurrent.atomic.AtomicInteger in
org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.waitForQueuedCommands() At
StatsUpdaterThread.java:org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.waitForQueuedCommands()
At StatsUpdaterThread.java:[line 642] |
| | org.apache.hadoop.hive.ql.stats.StatsUpdaterThread.buildPartColStr(Table)
concatenates strings using + in a loop At StatsUpdaterThread.java:in a loop
At StatsUpdaterThread.java:[line 402] |
| FindBugs | module:standalone-metastore |
| | org.apache.hadoop.hive.metastore.ObjectStore$15.run(List) concatenates
strings using + in a loop At ObjectStore.java:in a loop At
ObjectStore.java:[line 8408] |
| |
org.apache.hadoop.hive.metastore.ObjectStore$4.getJdoResult(ObjectStore$GetHelper)
concatenates strings using + in a loop At ObjectStore.java:in a loop At
ObjectStore.java:[line 1628] |
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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
3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/data/hiveptest/working/yetus_PreCommit-HIVE-Build-11414/dev-support/hive-personality.sh
|
| git revision | master / 28779d2 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| mvninstall |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/patch-mvninstall-itests_hcatalog-unit.txt
|
| mvninstall |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/patch-mvninstall-ql.txt
|
| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/diff-checkstyle-itests_hcatalog-unit.txt
|
| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/diff-checkstyle-ql.txt
|
| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/diff-checkstyle-standalone-metastore.txt
|
| findbugs |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/new-findbugs-ql.html
|
| findbugs |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus/new-findbugs-standalone-metastore.html
|
| modules | C: itests/hcatalog-unit ql standalone-metastore U: . |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-11414/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> add background stats updater similar to compactor
> -------------------------------------------------
>
> Key: HIVE-19418
> URL: https://issues.apache.org/jira/browse/HIVE-19418
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Major
> Attachments: HIVE-19418.01.patch, HIVE-19418.02.patch,
> HIVE-19418.03.patch, HIVE-19418.04.patch, HIVE-19418.05.patch,
> HIVE-19418.patch
>
>
> There's a JIRA HIVE-19416 to add snapshot version to stats for MM/ACID tables
> to make them usable in a transaction without breaking ACID (for metadata-only
> optimization). However, stats for ACID tables can still become unusable if
> e.g. two parallel inserts run - neither sees the data written by the other,
> so after both finish, the snapshots on either set of stats won't match the
> current snapshot and the stats will be unusable.
> Additionally, for ACID and non-ACID tables alike, a lot of the stats, with
> some exceptions like numRows, cannot be aggregated (i.e. you cannot combine
> ndvs from two inserts), and for ACID even less can be aggregated (you cannot
> derive min/max if some rows are deleted but you don't scan the rest of the
> dataset).
> Therefore we will add background logic to metastore (similar to, and
> partially inside, the ACID compactor) to update stats.
> It will have 3 modes of operation.
> 1) Off.
> 2) Update only the stats that exist but are out of date (generating stats can
> be expensive, so if the user is only analyzing a subset of tables it should
> be able to only update that subset). We can simply look at existing stats and
> only analyze for the relevant partitions and columns.
> 3) On: 2 + create stats for all tables and columns missing stats.
> There will also be a table parameter to skip stats update.
> In phase 1, the process will operate outside of compactor, and run analyze
> command on the table. The analyze command will automatically save the stats
> with ACID snapshot information if needed, based on HIVE-19416, so we don't
> need to do any special state management and this will work for all table
> types. However it's also more expensive.
> In phase 2, we can explore adding stats collection during MM compaction that
> uses a temp table. If we don't have open writers during major compaction (so
> we overwrite all of the data), the temp table stats can simply be copied over
> to the main table with correct snapshot information, saving us a table scan.
> In phase 3, we can add custom stats collection logic to full ACID compactor
> that is not query based, the same way as we'd do for (2). Alternatively we
> can wait for ACID compactor to become query based and just reuse (2).
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