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Improve Error Handling in Local Directory Feeds

This change improves handling of two error types for filesystem

based feeds. The first one is the handling of IO Errors which

causes the input stream to be closed, and the second one is

reacting to missed filesystem events. In both cases, we scan the

directory and compare it with the history we have in order to

resume from where we last left off.

In addition, this change includes some refactoring in external

data. Particularly, we get rid of the stream provider layer and

instead, stream factories create input streams directly. This

is consistent with record reader factories which create readers

directly without reader providers.

Change-Id: I08d89229e33c91532b1038ba9f7a372f7ca1fdb5

Reviewed-on: https://asterix-gerrit.ics.uci.edu/720

Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Reviewed-by: Murtadha Hubail <hubailmor@gmail.com>

  1. … 144 more files in changeset.
Remove Trailing Whitespace

This change removes all trailing whitespace in

java files in asterixdb

Change-Id: I32cda384f71dd5237a3c63e83c661f1cf64dc0eb

Reviewed-on: https://asterix-gerrit.ics.uci.edu/646

Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Reviewed-by: Till Westmann <tillw@apache.org>

  1. … 325 more files in changeset.
remove end-of-line whitespace

Change-Id: I5c0415f47d4c3a9827574fbdab949b45718d9ea4

Reviewed-on: https://asterix-gerrit.ics.uci.edu/601

Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Reviewed-by: Yingyi Bu <buyingyi@gmail.com>

  1. … 138 more files in changeset.
Feed Fixes and Cleanup

1. Introduce filesystem feed data source.

2. Fix the order of closing feed stages on disconnection.

3. Added Twitter feed to the compatibility utility to allow

using it with its alias.

4. First part of the feed log space.

5. Fixed the handling of duplicate key exception.

Change-Id: I4e8db26a810efd1fbaa52ceeb3efd0c8328ab070

Reviewed-on: https://asterix-gerrit.ics.uci.edu/574

Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Reviewed-by: Murtadha Hubail <hubailmor@gmail.com>

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    ./FeedCollectInfo.java
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    ./FeedConnectionId.java
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    ./FeedConnectionManager.java
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    ./FeedConnectionRequest.java
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    ./FeedLifecycleEventSubscriber.java
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    ./FeedManager.java
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    ./FeedMemoryManager.java
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    ./FeedMetadataManager.java
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    ./FeedRuntimeManager.java
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    • +76
    ./FeedSubscriptionManager.java
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    • +50
    ./FeedWorkManager.java
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