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https://issues.apache.org/jira/browse/HIVE-7730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaomeng Huang updated HIVE-7730:
---------------------------------
Description:
-Now what we get from HiveSemanticAnalyzerHookContextImpl is limited. If we
have hook of HiveSemanticAnalyzerHook, we may want to get more things from
hookContext. (e.g. the needed colums from query).-
-So we should get instance of HiveSemanticAnalyzerHookContext from
configuration, extends HiveSemanticAnalyzerHookContext with a new
implementation, overide the HiveSemanticAnalyzerHookContext.update() and put
what you want to the class.-
Hive should store accessed columns to ReadEntity when we set
HIVE_STATS_COLLECT_SCANCOLS is true.
Then external authorization model can get accessed columns when do
authorization in compile before execute. Maybe we will remove columnAccessInfo
from BaseSemanticAnalyzer, old authorization and AuthorizationModeV2 can get
accessed columns from ReadEntity too.
Here is the quick implement in SemanticAnalyzer.analyzeInternal() below:
{code} boolean isColumnInfoNeedForAuth =
SessionState.get().isAuthorizationModeV2()
&& HiveConf.getBoolVar(conf,
HiveConf.ConfVars.HIVE_AUTHORIZATION_ENABLED);
if (isColumnInfoNeedForAuth
|| HiveConf.getBoolVar(this.conf,
HiveConf.ConfVars.HIVE_STATS_COLLECT_SCANCOLS) == true) {
ColumnAccessAnalyzer columnAccessAnalyzer = new
ColumnAccessAnalyzer(pCtx);
setColumnAccessInfo(columnAccessAnalyzer.analyzeColumnAccess());
// TODO: we can put accessed column list to ReadEntity getting from
columnAccessInfo
}
{code}
was:
-Now what we get from HiveSemanticAnalyzerHookContextImpl is limited. If we
have hook of HiveSemanticAnalyzerHook, we may want to get more things from
hookContext. (e.g. the needed colums from query).-
-So we should get instance of HiveSemanticAnalyzerHookContext from
configuration, extends HiveSemanticAnalyzerHookContext with a new
implementation, overide the HiveSemanticAnalyzerHookContext.update() and put
what you want to the class.-
Hive should store accessed columns to ReadEntity when we set
HIVE_STATS_COLLECT_SCANCOLS is true.
Then we can get accessed columns when do authorization in compile before
execute.
Here is the quick implement in SemanticAnalyzer.analyzeInternal() below:
{code} boolean isColumnInfoNeedForAuth =
SessionState.get().isAuthorizationModeV2()
&& HiveConf.getBoolVar(conf,
HiveConf.ConfVars.HIVE_AUTHORIZATION_ENABLED);
if (isColumnInfoNeedForAuth
|| HiveConf.getBoolVar(this.conf,
HiveConf.ConfVars.HIVE_STATS_COLLECT_SCANCOLS) == true) {
ColumnAccessAnalyzer columnAccessAnalyzer = new
ColumnAccessAnalyzer(pCtx);
setColumnAccessInfo(columnAccessAnalyzer.analyzeColumnAccess());
// TODO: we can put accessed column list to ReadEntity getting from
columnAccessInfo
}
{code}
> Extend ReadEntity to add accessed columns from query
> ----------------------------------------------------
>
> Key: HIVE-7730
> URL: https://issues.apache.org/jira/browse/HIVE-7730
> Project: Hive
> Issue Type: Bug
> Reporter: Xiaomeng Huang
> Attachments: HIVE-7730.001.patch
>
>
> -Now what we get from HiveSemanticAnalyzerHookContextImpl is limited. If we
> have hook of HiveSemanticAnalyzerHook, we may want to get more things from
> hookContext. (e.g. the needed colums from query).-
> -So we should get instance of HiveSemanticAnalyzerHookContext from
> configuration, extends HiveSemanticAnalyzerHookContext with a new
> implementation, overide the HiveSemanticAnalyzerHookContext.update() and put
> what you want to the class.-
> Hive should store accessed columns to ReadEntity when we set
> HIVE_STATS_COLLECT_SCANCOLS is true.
> Then external authorization model can get accessed columns when do
> authorization in compile before execute. Maybe we will remove
> columnAccessInfo from BaseSemanticAnalyzer, old authorization and
> AuthorizationModeV2 can get accessed columns from ReadEntity too.
> Here is the quick implement in SemanticAnalyzer.analyzeInternal() below:
> {code} boolean isColumnInfoNeedForAuth =
> SessionState.get().isAuthorizationModeV2()
> && HiveConf.getBoolVar(conf,
> HiveConf.ConfVars.HIVE_AUTHORIZATION_ENABLED);
> if (isColumnInfoNeedForAuth
> || HiveConf.getBoolVar(this.conf,
> HiveConf.ConfVars.HIVE_STATS_COLLECT_SCANCOLS) == true) {
> ColumnAccessAnalyzer columnAccessAnalyzer = new
> ColumnAccessAnalyzer(pCtx);
> setColumnAccessInfo(columnAccessAnalyzer.analyzeColumnAccess());
> // TODO: we can put accessed column list to ReadEntity getting from
> columnAccessInfo
> }
> {code}
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