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https://issues.apache.org/jira/browse/HIVE-21762?focusedWorklogId=256622&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-256622
]
ASF GitHub Bot logged work on HIVE-21762:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 10/Jun/19 04:44
Start Date: 10/Jun/19 04:44
Worklog Time Spent: 10m
Work Description: sankarh commented on pull request #664: HIVE-21762:
REPL DUMP to support new format for replication policy input to take included
tables list.
URL: https://github.com/apache/hive/pull/664#discussion_r291877895
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/parse/ReplicationSemanticAnalyzer.java
##########
@@ -134,50 +130,99 @@ private void setTxnConfigs() {
}
}
+ private boolean isValidTablesList(Tree tablesListTree) {
+ if (tablesListTree.getChildCount() <= 1) {
+ // If one or zero child, then it is valid.
+ // For single table replication, the valid format is
<db_name>.<table_name>.
+ // To include multiple tables (t1 and t2), then valid format is
<db_name>.[t1, t2].
+ // So, single child is always valid either it is table_name or
tables_list.
+ return true;
+ }
+ assert(tablesListTree.getChildCount() == 2);
+
+ // We don't allow input of format <db_name>.<table_name>.<table_name> or
<db_name>.<table_name>.[<tables_list>].
+ // To include t1* and exclude t100, then valid format is
<db_name>.[t1*].[t100].
+ // So, if 2 children are there, then both should be table_lists.
+ return ((tablesListTree.getChild(0).getType() == TOK_REPL_TABLES_LIST)
+ && (tablesListTree.getChild(1).getType() == TOK_REPL_TABLES_LIST));
+ }
+
private void initReplDump(ASTNode ast) throws HiveException {
int numChildren = ast.getChildCount();
boolean isMetaDataOnly = false;
- dbNameOrPattern = PlanUtils.stripQuotes(ast.getChild(0).getText());
-
- // skip the first node, which is always required
- int currNode = 1;
- while (currNode < numChildren) {
- if (ast.getChild(currNode).getType() == TOK_REPL_CONFIG) {
- Map<String, String> replConfigs
- = DDLSemanticAnalyzer.getProps((ASTNode)
ast.getChild(currNode).getChild(0));
- if (null != replConfigs) {
- for (Map.Entry<String, String> config : replConfigs.entrySet()) {
- conf.set(config.getKey(), config.getValue());
+ String dbNameOrPattern = PlanUtils.stripQuotes(ast.getChild(0).getText());
+ replScope.setDbName(dbNameOrPattern);
+
+ // Skip the first node, which is always required
+ int childIdx = 1;
+ while (childIdx < numChildren) {
+ Tree currNode = ast.getChild(childIdx);
+ switch (currNode.getType()) {
+ case TOK_REPL_CONFIG: {
+ Map<String, String> replConfigs
+ = DDLSemanticAnalyzer.getProps((ASTNode) currNode.getChild(0));
+ if (null != replConfigs) {
+ for (Map.Entry<String, String> config : replConfigs.entrySet()) {
+ conf.set(config.getKey(), config.getValue());
+ }
+ isMetaDataOnly = HiveConf.getBoolVar(conf,
REPL_DUMP_METADATA_ONLY);
}
- isMetaDataOnly = HiveConf.getBoolVar(conf, REPL_DUMP_METADATA_ONLY);
+ break;
}
- } else if (ast.getChild(currNode).getType() == TOK_TABNAME) {
- // optional tblName was specified.
- tblNameOrPattern =
PlanUtils.stripQuotes(ast.getChild(currNode).getChild(0).getText());
- } else {
- // TOK_FROM subtree
- Tree fromNode = ast.getChild(currNode);
- eventFrom =
Long.parseLong(PlanUtils.stripQuotes(fromNode.getChild(0).getText()));
- // skip the first, which is always required
- int numChild = 1;
- while (numChild < fromNode.getChildCount()) {
- if (fromNode.getChild(numChild).getType() == TOK_TO) {
- eventTo =
-
Long.parseLong(PlanUtils.stripQuotes(fromNode.getChild(numChild +
1).getText()));
- // skip the next child, since we already took care of it
- numChild++;
- } else if (fromNode.getChild(numChild).getType() == TOK_LIMIT) {
- maxEventLimit =
-
Integer.parseInt(PlanUtils.stripQuotes(fromNode.getChild(numChild +
1).getText()));
- // skip the next child, since we already took care of it
+ case TOK_REPL_TABLES: {
+ assert(currNode.getChildCount() <= 2);
+ if (!isValidTablesList(currNode)) {
+ LOG.error(ErrorMsg.REPL_INCORRECT_SYNTAX_FOR_REPL_POLICY.getMsg());
+ throw new
SemanticException(ErrorMsg.REPL_INCORRECT_SYNTAX_FOR_REPL_POLICY.getMsg());
+ }
+
+ // Traverse the children which can be single table_name node or just
include tables list
+ // or both include and exclude tables list.
+ for (int listIdx = 0; listIdx < currNode.getChildCount(); listIdx++)
{
+ Tree tablesNode = currNode.getChild(listIdx);
+ if (tablesNode.getType() == TOK_TABNAME) {
Review comment:
I will change it to switch-case. I guess, there is no harm in having dead
code which is readable and also catch corruptions.
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Issue Time Tracking
-------------------
Worklog Id: (was: 256622)
Time Spent: 2.5h (was: 2h 20m)
> REPL DUMP to support new format for replication policy input to take included
> tables list.
> ------------------------------------------------------------------------------------------
>
> Key: HIVE-21762
> URL: https://issues.apache.org/jira/browse/HIVE-21762
> Project: Hive
> Issue Type: Sub-task
> Components: repl
> Reporter: Sankar Hariappan
> Assignee: Sankar Hariappan
> Priority: Major
> Labels: DR, Replication, pull-request-available
> Attachments: HIVE-21762.01.patch, HIVE-21762.02.patch,
> HIVE-21762.03.patch
>
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> - REPL DUMP syntax:
> {code}
> REPL DUMP <repl_policy> [FROM <last_repl_id> WITH <key_values_list>;
> {code}
> - New format for the Replication policy have 3 parts all separated with Dot
> (.).
> 1. First part is DB name.
> 2. Second part is included list. Comma separated table names/regex with in
> square brackets[]. If square brackets are not there, then it is treated as
> single table replication which skips DB level events.
> 3. Third part is excluded list. Comma separated table names/regex with in
> square brackets[].
> {code}
> <db_name> -- Full DB replication which is currently supported
> <db_name>.[] - Full DB replication
> <db_name>.['.*?'] - Full DB replication
> <db_name>.t1 -- Single table replication (DB events excluded) which is
> currently supported
> <db_name>.['t1', 't2'] -- DB replication with static list of tables t1 and
> t2 included.
> <db_name>.['t1*', 't2', '*t3'].['t100', '5t3', 't4'] -- DB replication with
> all tables having prefix t1, with suffix t3 and include table t2 and exclude
> t100 which has the prefix t1, 5t3 which suffix t3 and t4.
> {code}
> - Need to support regular expression of any format.
> - A table is included in dump only if it matches the regular expressions in
> included list and doesn't match the excluded list.
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