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From "Monani Mihir (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (PHOENIX-5079) PhoenixIndexMetaData.isIndexRebuild gives wrong results in Partial Index Rebuilding
Date Tue, 01 Jan 2019 18:44:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-5079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731662#comment-16731662
] 

Monani Mihir edited comment on PHOENIX-5079 at 1/1/19 6:43 PM:
---------------------------------------------------------------

[~vincentpoon] I mean to write "false" instead of "falls".  I have corrected JIRA descriptions. 

About the previous comment :-

Here is the definition of PhoenixIndexMetaData#IsIndexRebuild:-
{code:java}
public static boolean isIndexRebuild(Map<String,byte[]> attributes) {
    return attributes.get(BaseScannerRegionObserver.REPLAY_WRITES) != null;
}
{code}
For Index Rebuilding , we prepare list of mutations (list of put/delete) in UARO#rebuildIndices.
So when i put logs in rebuilder code path, i found that in Indexer#postBatchMutateIndispensably
we pass BatchMutateContext as list of [indexUpdates|https://github.com/apache/phoenix/blob/master/phoenix-core/src/main/java/org/apache/phoenix/hbase/index/Indexer.java#L573].
If you check isIndexUpdate for miniBatchOp and context.indexUpdates, we get true for miniBatchOp
and false for context.indexUpdates. 
{code:java}
public void postBatchMutateIndispensably(ObserverContext<RegionCoprocessorEnvironment>
c,
MiniBatchOperationInProgress<Mutation> miniBatchOp, final boolean success) throws IOException
{
...
BatchMutateContext context = getBatchMutateContext(c);
... this.builder.batchCompleted(miniBatchOp);
LOG.info("postBatchMutateIndispensably_miniBatchOp isIndexRebuild :- " + PhoenixIndexMetaData.isIndexRebuild(miniBatchOp.getOperation(0).getAttributesMap()));
LOG.info("postBatchMutateIndispensably_context isIndexRebuild :- " + PhoenixIndexMetaData.isIndexRebuild(context.indexUpdates.iterator().next().getFirst().getAttributesMap()));
if (success)

{ // if miniBatchOp was successfully written, write index updates doPost(c, context); }

...
{code}

  

 


was (Author: mihir6692):
[~vincentpoon] I mean to write "false" instead of "falls".  I have corrected JIRA descriptions. 

About the previous comment :-

Here is the definition of PhoenixIndexMetaData#IsIndexRebuild:-
{code:java}
public static boolean isIndexRebuild(Map<String,byte[]> attributes) {
    return attributes.get(BaseScannerRegionObserver.REPLAY_WRITES) != null;
}
{code}
For Index Rebuilding , we prepare list of mutations (list of put/delete) in UARO#rebuildIndices.
So when i put logs in rebuilder code path, i found that in Indexer#postBatchMutateIndispensably
we pass BatchMutateContext as list of [indexUpdates|https://github.com/apache/phoenix/blob/master/phoenix-core/src/main/java/org/apache/phoenix/hbase/index/Indexer.java#L573].
If you check isIndexUpdate for miniBatchOp and context.indexUpdates, we get true for miniBatchOp
and false for context.indexUpdates. 
public void postBatchMutateIndispensably(ObserverContext<RegionCoprocessorEnvironment>
c,
MiniBatchOperationInProgress<Mutation> miniBatchOp, final boolean success) throws IOException
{
...
    BatchMutateContext context = getBatchMutateContext(c);
...    this.builder.batchCompleted(miniBatchOp);
    LOG.info("postBatchMutateIndispensably_miniBatchOp isIndexRebuild :- " + PhoenixIndexMetaData.isIndexRebuild(miniBatchOp.getOperation(0).getAttributesMap()));
    LOG.info("postBatchMutateIndispensably_context isIndexRebuild :- " + PhoenixIndexMetaData.isIndexRebuild(context.indexUpdates.iterator().next().getFirst().getAttributesMap()));
   if (success) { // if miniBatchOp was successfully written, write index updates
        doPost(c, context);
    }...
 

 

> PhoenixIndexMetaData.isIndexRebuild gives wrong results in Partial Index Rebuilding
> -----------------------------------------------------------------------------------
>
>                 Key: PHOENIX-5079
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5079
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.14.1
>            Reporter: Monani Mihir
>            Priority: Minor
>
> During Partial Rebuild, If rebuilder get index failure (because of region move/split
etc), it will call PhoenixIndexFailurePolicy.handleFailure . Here it checks if mutations are
part of Index Rebuild or not . 
> {code:java}
> if (!throwing) {
>                 SQLException sqlException =
>                         new SQLExceptionInfo.Builder(SQLExceptionCode.INDEX_WRITE_FAILURE)
>                                 .setRootCause(cause).setMessage(cause.getLocalizedMessage()).build()
>                                 .buildException();
>                 IOException ioException = ServerUtil.wrapInDoNotRetryIOException(null,
sqlException, timestamp);
>             Mutation m = attempted.entries().iterator().next().getValue();
>             boolean isIndexRebuild = PhoenixIndexMetaData.isIndexRebuild(m.getAttributesMap());
>             // Always throw if rebuilding index since the rebuilder needs to know
if it was successful
>             if (throwIndexWriteFailure || isIndexRebuild) {
>             throw ioException;
>             } else {
>                     LOG.warn("Swallowing index write failure", ioException);
>             }
>             }
> {code}
> Here isIndexRebuild becomes false even though we have set attribute for REPLY_WRITE
to 
> REPLAY_ONLY_INDEX_WRITES  in UngroupedAggregateRegionObserver.rebuildIndices 
> {code:java}
> ...
> put.setAttribute(REPLAY_WRITES, REPLAY_ONLY_INDEX_WRITES);
> ...{code}
>  



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