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[SPARK-21596][SS] Ensure places calling HDFSMetadataLog.get check the return value - #18890
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tdas wants to merge 1 commit into
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[SPARK-21596][SS] Ensure places calling HDFSMetadataLog.get check the return value#18890tdas wants to merge 1 commit into
tdas wants to merge 1 commit into
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… return value When I was investigating a flaky test, I realized that many places don't check the return value of `HDFSMetadataLog.get(batchId: Long): Option[T]`. When a batch is supposed to be there, the caller just ignores None rather than throwing an error. If some bug causes a query doesn't generate a batch metadata file, this behavior will hide it and allow the query continuing to run and finally delete metadata logs and make it hard to debug. This PR ensures that places calling HDFSMetadataLog.get always check the return value. Jenkins Author: Shixiong Zhu <shixiong@databricks.com> Closesapache#18799 from zsxwing/SPARK-21596.
zsxwing
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Aug 9, 2017
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LGTM |
SparkQA
commented
Aug 9, 2017
Test build #80436 has finished for PR 18890 at commit
|
zsxwing
commented
Aug 9, 2017
Member
Thanks! Merging to branch-2.2. |
asfgit pushed a commit
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Aug 9, 2017
… return value Same PR as #18799 but for branch 2.2. Main discussion the other PR. -------- When I was investigating a flaky test, I realized that many places don't check the return value of `HDFSMetadataLog.get(batchId: Long): Option[T]`. When a batch is supposed to be there, the caller just ignores None rather than throwing an error. If some bug causes a query doesn't generate a batch metadata file, this behavior will hide it and allow the query continuing to run and finally delete metadata logs and make it hard to debug. This PR ensures that places calling HDFSMetadataLog.get always check the return value. Jenkins Author: Shixiong Zhu <shixiong@databricks.com> Closes#18890 from tdas/SPARK-21596-2.2.
zsxwing
commented
Aug 9, 2017
Member
Merged. Could you close the PR? |
tdas
commented
Aug 9, 2017
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Thanks @zsxwing |
MatthewRBruce pushed a commit
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Jul 31, 2018
… return value Same PR as apache#18799 but for branch 2.2. Main discussion the other PR. -------- When I was investigating a flaky test, I realized that many places don't check the return value of `HDFSMetadataLog.get(batchId: Long): Option[T]`. When a batch is supposed to be there, the caller just ignores None rather than throwing an error. If some bug causes a query doesn't generate a batch metadata file, this behavior will hide it and allow the query continuing to run and finally delete metadata logs and make it hard to debug. This PR ensures that places calling HDFSMetadataLog.get always check the return value. Jenkins Author: Shixiong Zhu <shixiong@databricks.com> Closesapache#18890 from tdas/SPARK-21596-2.2.
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Same PR as #18799 but for branch 2.2. Main discussion the other PR.
When I was investigating a flaky test, I realized that many places don't check the return value of
HDFSMetadataLog.get(batchId: Long): Option[T]. When a batch is supposed to be there, the caller just ignores None rather than throwing an error. If some bug causes a query doesn't generate a batch metadata file, this behavior will hide it and allow the query continuing to run and finally delete metadata logs and make it hard to debug.This PR ensures that places calling HDFSMetadataLog.get always check the return value.
Jenkins