[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.008.patch I had been back to this, but after some previous refactoring it was more difficult to override everything I needed to, and then some tests were failing for unusual reasons. I now have all tests passing. Attaching a patch that does a few things: - Does a bit of refactoring in TestDynamoDBMetadataStore so the parts that deal with the local instance can be overridden, allowing the test to fall back on the integration test configuration. - Provides an ITestDynamoDBMetadataStore class that overrides such things. It is not safe to run concurrently with other tests - so unfortunately it added about 8 minutes to a test run for me. - Fixed the I/O reprovisioning test: previously, state changes happened immediately after reprovisioning. Now, you have to wait for the table to return to the active state. - Fixed testInitialization to not assume the bucket and table names match. My main concern is the time it takes. I wouldn't be opposed to hiding this behind the -Dscale option, although technically it's not a scale test. It is a *big* test, and is only useful for catching bugs not caught against the Local version. Those have definitely existed before, and developing this test helped me catch them, but I don't think the time is worth it for every little commit. > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch, > HADOOP-14068-HADOOP-13345.006.patch, HADOOP-14068-HADOOP-13345.007.patch, > HADOOP-14068-HADOOP-13345.008.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.001.patch Attaching a first patch that extends TestDynamoDBMetadataStore and allows the same tests to run against the real DynamoDB service. I still have a few things to clean up, but at this point all the tests pass in the real environment too, and they're run against a local instance when just running unit tests, and against the remote instance when running integration tests (note that the latter takes about ~10 minutes because it drops and recreates the table for every test). > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Status: Patch Available (was: Open) > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.002.patch I think I've addressed everything I was unhappy with in the previous patch: mainly the hard-coded bucket, etc. The reason the 2 verifyTable* tests were failing previously for me turned out to be because of that: if you've configured S3Guard to use a permanent table rather than naming it after the bucket you're also using for tests, those tests would make assumptions that are no longer true. So I think it's good that the tests are inheriting more from the configuration after this change. > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.003.patch {quote} I assume this change is because the table moves out of the Active state after changing throughput provisioning? So we wait for it to become Active before proceeding? And I assume we never hit the issue with the local dynamoDB? {quote} That's correct - it appears instantaneous locally. {quote} Don't think we want to swallow this exception. How about resetting the thread's interrupt flag then throwing an InterruptedIOException that wraps the original? {quote} Ah yes - will do. {quote} Just remove the line.. {quote} Removed both sections of commented out code... {quote} For testing, it may just be best to switch to the real DDB endpoint everywhere {quote} I don't disagree about the benefits, but having TestDynamoDBMetadataStore be able to run in pre-commit checks seems like a pretty big deal to me. The full integration test version does take a long time to run (~7 minutes for me). > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.004.patch Oh shoot - forgot to `git add` after applying the previous patch and iterating. Am now throwing InterruptedIOException, too. > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.005.patch ... NOW throwing InterruptedIOException... While retesting this, I had the following failure. I've double-checked there's nothing funny about my configuration, and all the other tests pass, so it's quite odd: {quote} testInitialize(org.apache.hadoop.fs.s3a.s3guard.ITestDynamoDBMetadataStore) Time elapsed: 13.434 sec <<< ERROR! com.amazonaws.services.s3.model.AmazonS3Exception: The specified bucket does not exist (Service: Amazon S3; Status Code: 404; Error Code: NoSuchBucket; Request ID: 56C458067F1E7CEC) {quote} > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Aaron Fabbri updated HADOOP-14068: -- Status: Patch Available (was: Open) > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Aaron Fabbri updated HADOOP-14068: -- Status: Open (was: Patch Available) > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.006.patch I had an issue rebasing this today and had to change one more instance of table name -> bucket name to get all tests passing. Attaching that patch (which passed Yetus locally again). > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch, > HADOOP-14068-HADOOP-13345.006.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Status: Open (was: Patch Available) Withdrawing patch. I've updated it so that it compiles and *mostly* works on top of the recent ClientFactory refactor, but there are still 5-6 tests that fail that need to be investigated. > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch, > HADOOP-14068-HADOOP-13345.006.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sean Mackrory updated HADOOP-14068: --- Attachment: HADOOP-14068-HADOOP-13345.007.patch > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch, > HADOOP-14068-HADOOP-13345.006.patch, HADOOP-14068-HADOOP-13345.007.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.3.15#6346) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Steve Loughran updated HADOOP-14068: Parent Issue: HADOOP-14825 (was: HADOOP-13345) > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch, > HADOOP-14068-HADOOP-13345.006.patch, HADOOP-14068-HADOOP-13345.007.patch, > HADOOP-14068-HADOOP-13345.008.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14068) Add integration test version of TestMetadataStore for DynamoDB
[ https://issues.apache.org/jira/browse/HADOOP-14068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Steve Loughran updated HADOOP-14068: Affects Version/s: 3.0.0-beta1 > Add integration test version of TestMetadataStore for DynamoDB > -- > > Key: HADOOP-14068 > URL: https://issues.apache.org/jira/browse/HADOOP-14068 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 >Affects Versions: 3.0.0-beta1 >Reporter: Sean Mackrory >Assignee: Sean Mackrory > Attachments: HADOOP-14068-HADOOP-13345.001.patch, > HADOOP-14068-HADOOP-13345.002.patch, HADOOP-14068-HADOOP-13345.003.patch, > HADOOP-14068-HADOOP-13345.004.patch, HADOOP-14068-HADOOP-13345.005.patch, > HADOOP-14068-HADOOP-13345.006.patch, HADOOP-14068-HADOOP-13345.007.patch, > HADOOP-14068-HADOOP-13345.008.patch > > > I tweaked TestDynamoDBMetadataStore to run against the actual Amazon DynamoDB > service (as opposed to the "local" edition). Several tests failed because of > minor variations in behavior. I think the differences that are clearly > possible are enough to warrant extending that class as an ITest (but > obviously keeping the existing test so 99% of the the coverage remains even > when not configured for actual DynamoDB usage). -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org