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https://issues.apache.org/jira/browse/HIVE-13225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-13225:
---------------------------
Affects Version/s: 2.1.0
2.0.0
> LLAP: Stripe metadata cache holds unreachable keys
> ---------------------------------------------------
>
> Key: HIVE-13225
> URL: https://issues.apache.org/jira/browse/HIVE-13225
> Project: Hive
> Issue Type: Bug
> Components: llap
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Sergey Shelukhin
>
> The Hash inspection reported that there were some unreachable keys in the
> metadata hashmap.
> {code}
> for (...) {
> if (hasFileId && metadataCache != null) {
> stripeKey.stripeIx = stripeIx;
> value = metadataCache.getStripeMetadata(stripeKey);
> }
> if (value == null || !value.hasAllIndexes(globalInc)) {
> if (hasFileId && metadataCache != null) {
> value = metadataCache.putStripeMetadata(value);
> ...
> }
> {code}
> Means that the hashCode of the key changes after the put if there are > 1
> stripes in the file.
> {code}
> public OrcStripeMetadata putStripeMetadata(OrcStripeMetadata metaData) {
> ....
> OrcStripeMetadata val = stripeMetadata.putIfAbsent(metaData.getKey(),
> metaData);
> {code}
> needs to make a copy of the Key, if it needs to preserve hash consistency.
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